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✏️ Editing: org.freedesktop.PackageKit.Transaction.xml

<!DOCTYPE node PUBLIC
"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN"
"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd" [
  <!ENTITY ERROR_GENERAL "org.freedesktop.PackageKit.Denied">
]>
<node name="/" xmlns:doc="http://www.freedesktop.org/dbus/1.0/doc.dtd">
  <interface name="org.freedesktop.PackageKit.Transaction">
    <doc:doc>
      <doc:description>
        <doc:para>
          The transaction interface is used for interacting with individual transactions.
        </doc:para>
      </doc:description>
    </doc:doc>

<property name="Role" type="u" access="read">
      <doc:doc>
        <doc:description>
          <doc:para>
            The transaction role enum, e.g. <doc:tt>update-system</doc:tt>.
          </doc:para>
        </doc:description>
      </doc:doc>
    </property>
    <property name="Status" type="u" access="read">
      <doc:doc>
        <doc:description>
          <doc:para>
            The transaction status enum, e.g. <doc:tt>downloading</doc:tt>.
          </doc:para>
        </doc:description>
      </doc:doc>
    </property>
    <property name="LastPackage" type="s" access="read">
      <doc:doc>
        <doc:description>
          <doc:para>
            The last package_id that was processed, e.g. <doc:tt>hal;0.1.2;i386;fedora</doc:tt>.
          </doc:para>
        </doc:description>
      </doc:doc>
    </property>
    <property name="Uid" type="u" access="read">
      <doc:doc>
        <doc:description>
          <doc:para>
            The uid of the user that started the transaction.
          </doc:para>
        </doc:description>
      </doc:doc>
    </property>
    <property name="Sender" type="s" access="read">
      <doc:doc>
        <doc:description>
          <doc:para>
            The D-Bus name of the process that started the transaction.
          </doc:para>
        </doc:description>
      </doc:doc>
    </property>
    <property name="Percentage" type="u" access="read">
      <doc:doc>
        <doc:description>
          <doc:para>
            The percentage complete of the transaction.
          </doc:para>
          <doc:para>
            Backends should set this value to 101 if the amount complete cannot be calculated.
          </doc:para>
        </doc:description>
      </doc:doc>
    </property>
    <property name="AllowCancel" type="b" access="read">
      <doc:doc>
        <doc:description>
          <doc:para>
            If the transaction can be cancelled.
          </doc:para>
        </doc:description>
      </doc:doc>
    </property>
    <property name="CallerActive" type="b" access="read">
      <doc:doc>
        <doc:description>
          <doc:para>
            If the original caller of the method is still connected to the system bus.
            This is usually an indication that the client can handle it's own error handling and
            EULA callbacks rather than another program taking over.
          </doc:para>
        </doc:description>
      </doc:doc>
    </property>
    <property name="ElapsedTime" type="u" access="read">
      <doc:doc>
        <doc:description>
          <doc:para>
            The amount of time elapsed during the transaction in seconds.
          </doc:para>
        </doc:description>
      </doc:doc>
    </property>
    <property name="RemainingTime" type="u" access="read">
      <doc:doc>
        <doc:description>
          <doc:para>
            The estimated time remaining of the transaction in seconds, or 0 if not known.
          </doc:para>
        </doc:description>
      </doc:doc>
    </property>
    <property name="Speed" type="u" access="read">
      <doc:doc>
        <doc:description>
          <doc:para>
            The estimated speed of the transaction (copying, downloading, etc.) in bits per second, or 0 if not known.
          </doc:para>
        </doc:description>
      </doc:doc>
    </property>
    <property name="DownloadSizeRemaining" type="t" access="read">
      <doc:doc>
        <doc:description>
          <doc:para>
            The number of bytes remaining to download, 0 if nothing is left to download.
          </doc:para>
        </doc:description>
      </doc:doc>
    </property>
    <property name="TransactionFlags" type="t" access="read">
      <doc:doc>
        <doc:description>
          <doc:para>
            The flags set for this transaction, e.g. SIMULATE or ONLY_DOWNLOAD.
          </doc:para>
        </doc:description>
      </doc:doc>
    </property>

<method name="SetHints">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method allows the calling session to set transaction hints for
            the package manager which can change as the transaction runs.
          </doc:para>
          <doc:para>
            This method can be sent before the transaction has been run or
            whilst it is running. There is no limit to the number of times this
            method can be sent, although some backends may only use the values
            that were set before the transaction was started.
          </doc:para>
          <doc:para>
            Each parameter value is optional.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="as" name="hints" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The values as an array of strings, for example
              <doc:tt>['locale=en_GB.utf8','idle=true','interactive=false','cache-age=3600']</doc:tt>.
            </doc:para>
            <doc:para>
              The following parameter values are understood:
            </doc:para>
            <doc:list>
              <doc:item>
                <doc:term>locale</doc:term>
                <doc:definition>
                  The locale code, for example <doc:tt>en_GB</doc:tt>.
                </doc:definition>
              </doc:item>
              <doc:item>
                <doc:term>background</doc:term>
                <doc:definition>
                  If the method should be executed as a background task, valid
                  values are <doc:tt>true</doc:tt> and <doc:tt>false</doc:tt>,
                  and other values will result in an error.
                  Background tasks are normally treated with a low priority than
                  regular tasks, and normally only use idle CPU and network.
                </doc:definition>
              </doc:item>
              <doc:item>
                <doc:term>interactive</doc:term>
                <doc:definition>
                  If the method can ask interactive questions whilst running,
                  valid values are <doc:tt>true</doc:tt> and <doc:tt>false</doc:tt>,
                  and other values will result in an error.
                </doc:definition>
              </doc:item>
              <doc:item>
                <doc:term>cache-age</doc:term>
                <doc:definition>
                  This allows the frontend to set how fresh it needs the
                  metadata used in the transaction.
                  This allows fine control of the age of the returned results,
                  but means the frontend probably has to query the updates
                  check value and pass it this value for <doc:tt>GetUpdates</doc:tt>,
                  and choose something sane otherwise.
                  Most interactive clients will set this to <doc:tt>intmax</doc:tt>
                  which means "never download new metadata, unless required to return results".
                  Most transactions will not have this value set.
                </doc:definition>
              </doc:item>
              <doc:item>
                <doc:term>supports-plural-signals</doc:term>
                <doc:definition>
                  This allows the frontend to tell the daemon that it supports the
                  new <doc:tt>Packages</doc:tt> signal for receiving information about
                  multiple packages at once, rather than just the original
                  <doc:tt>Package</doc:tt> signal.
                  If this is set, and the daemon supports the signal, it will be used.
                  If present, this must always be set to <doc:tt>true</doc:tt>.
                </doc:definition>
              </doc:item>
            </doc:list>
            <doc:para>
              Other values will cause a verbose warning in the daemon, but will
              not cause the method to fail. This will preserve forward and
              backwards compatibility for future API versions.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="AcceptEula">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method allows the user to accept a end user licence agreement.
          </doc:para>
        </doc:description>
        <doc:permission>Callers need the org.freedesktop.packagekit.accept-eula</doc:permission>
      </doc:doc>
      <arg type="s" name="eula_id" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A valid EULA ID
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="Cancel">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method cancels a transaction that is already running
          </doc:para>
        </doc:description>
      </doc:doc>
    </method>

<method name="DownloadPackages">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method downloads packages into a temporary directory.
          </doc:para>
          <doc:para>
            This method should emit one
            <doc:tt>Files</doc:tt> signal for each package that is downloaded,
            with the file list set as the name of the complete downloaded file
            and directory, so for example:
          </doc:para>
          <doc:para>
            <doc:tt>DownloadPackages('hal;0.1.2;i386;fedora','hal-info;2009-09-07;no-arch;updates')</doc:tt>
            should send two signals, e.g.
            <doc:tt>Files('hal;0.1.2;i386;fedora', '/tmp/hal-0.1.2.i386.rpm')</doc:tt>
            and
            <doc:tt>Files('hal-info;2009-09-07;no-arch;updates', '/tmp/hal-info-2009-09-07.noarch.rpm')</doc:tt>.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="b" name="store_in_cache" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              If the downloaded files should be stored in the system
              package cache rather than copied into a newly created
              directory.
            </doc:para>
            <doc:para>
              See <doc:ulink url="https://www.freedesktop.org/software/PackageKit/gtk-doc/introduction-ideas-transactions.html">
              the developer docs</doc:ulink> for more details on how
              this is supposed to work.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="as" name="package_ids" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              An array of package IDs.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="GetCategories">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method return the collection categories
          </doc:para>
        </doc:description>
          <doc:para>
            This method typically emits
            <doc:tt>Categories</doc:tt> and <doc:tt>Error</doc:tt>.
          </doc:para>
          <doc:para>
            Note: Categories can be returned that represent groups of
            packages in a specific repository.
            These will have a category prefix of <doc:tt>repo:</doc:tt>
            which should be understood by <doc:tt>SearchGroups</doc:tt>
            if this feature is used.
          </doc:para>
      </doc:doc>
    </method>

<method name="DependsOn">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method returns packages that this package depends on.
          </doc:para>
          <doc:para>
            This method typically emits
            <doc:tt>Progress</doc:tt>,
            <doc:tt>Status</doc:tt> and
            <doc:tt>Error</doc:tt> and
            <doc:tt>Package</doc:tt>.
          </doc:para>
          <doc:para>
            <doc:tt>Package</doc:tt> enumerated types should be
            <doc:tt>available</doc:tt> or <doc:tt>installed</doc:tt>.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="t" name="filter" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A correct filter bitfield, e.g. <doc:tt>none</doc:tt> or <doc:tt>installed;~devel</doc:tt>
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="as" name="package_ids" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              An array of package IDs.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="b" name="recursive" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              Either <doc:tt>true</doc:tt> or <doc:tt>false</doc:tt>. If yes then the requirements should be
              returned for all packages returned.
              This means if gnome-power-manager depends on NetworkManager
              and NetworkManager depends on HAL, then DependsOn on
              gnome-power-manager should return both HAL and NetworkManager.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="GetDetails">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method should return all the details about a specific
            <doc:tt>package_id</doc:tt>.
          </doc:para>
          <doc:para>
            This method typically emits
            <doc:tt>Progress</doc:tt>,
            <doc:tt>Status</doc:tt> and
            <doc:tt>Error</doc:tt> and
            <doc:tt>Details</doc:tt>.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="as" name="package_ids" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              An array of package IDs.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="GetDetailsLocal">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method should return all the details about a specific
            local file.
          </doc:para>
          <doc:para>
            This method typically emits
            <doc:tt>Progress</doc:tt>,
            <doc:tt>Status</doc:tt> and
            <doc:tt>Error</doc:tt> and
            <doc:tt>Details</doc:tt>.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="as" name="files" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              An array of filenames.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="GetFilesLocal">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method should return all the file lists for a specific
            local file.
          </doc:para>
          <doc:para>
            This method typically emits
            <doc:tt>Progress</doc:tt>,
            <doc:tt>Status</doc:tt> and
            <doc:tt>Error</doc:tt> and
            <doc:tt>Details</doc:tt>.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="as" name="files" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              An array of filenames.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="GetFiles">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method should return the file list of the <doc:tt>package_id</doc:tt>.
          </doc:para>
          <doc:para>
            This method typically emits
            <doc:tt>Progress</doc:tt>,
            <doc:tt>Status</doc:tt> and
            <doc:tt>Error</doc:tt> and
            <doc:tt>Files</doc:tt>.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="as" name="package_ids" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              An array of package IDs.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="GetOldTransactions">
      <doc:doc>
        <doc:description>
          <doc:para>
            This method allows a client to view details for old transactions.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="u" name="number" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The number of past transactions, or 0 for all known transactions.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="GetPackages">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method returns all the packages without a search term.
          </doc:para>
          <doc:para>
            This method typically emits
            <doc:tt>Progress</doc:tt>,
            <doc:tt>Error</doc:tt> and
            <doc:tt>Package</doc:tt>.
          </doc:para>
          <doc:para>
            <doc:tt>Package</doc:tt> enumerated types should be
            <doc:tt>available</doc:tt> or <doc:tt>installed</doc:tt>.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="t" name="filter" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A correct filter bitfield, e.g. <doc:tt>none</doc:tt> or <doc:tt>installed;~devel</doc:tt>
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="GetRepoList">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method returns the list of repositories used in the system.
          </doc:para>
          <doc:para>
            This method should emit <doc:tt>RepoDetail</doc:tt>.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="t" name="filter" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A correct filter bitfield, e.g. <doc:tt>none</doc:tt> or <doc:tt>installed;~devel</doc:tt>
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="RequiredBy">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method returns packages that depend on this package.
            This is useful to know, as if <doc:tt>package_id</doc:tt> is being
            removed, we can warn the user what else would be removed.
          </doc:para>
          <doc:para>
            This method typically emits
            <doc:tt>Progress</doc:tt>,
            <doc:tt>Status</doc:tt> and
            <doc:tt>Error</doc:tt> and
            <doc:tt>Package</doc:tt>.
          </doc:para>
          <doc:para>
            <doc:tt>Package</doc:tt> enumerated types should be
            <doc:tt>available</doc:tt> or <doc:tt>installed</doc:tt>.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="t" name="filter" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A correct filter bitfield, e.g. <doc:tt>none</doc:tt> or <doc:tt>installed;~devel</doc:tt>
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="as" name="package_ids" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              An array of package IDs.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="b" name="recursive" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              Either <doc:tt>true</doc:tt> or <doc:tt>false</doc:tt>. If yes then the requirements should be
              returned for all packages returned.
              This means if gnome-power-manager depends on NetworkManager
              and NetworkManager depends on HAL, then GetRequires on
              HAL should return both gnome-power-manager and NetworkManager.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="GetUpdateDetail">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method returns details about a specific update.
          </doc:para>
          <doc:para>
            This method typically emits
            <doc:tt>UpdateDetail</doc:tt> and
            <doc:tt>Error</doc:tt>
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="as" name="package_ids" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              An array of package IDs.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="GetUpdates">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method should return a list of packages that are installed and are upgradable.
            It should only return the newest update for each installed package.
          </doc:para>
          <doc:para>
            This method typically emits
            <doc:tt>Progress</doc:tt>,
            <doc:tt>Error</doc:tt> and
            <doc:tt>Package</doc:tt>.
          </doc:para>
          <doc:para>
            <doc:tt>Package</doc:tt> enumerated types should be
            <doc:tt>blocked</doc:tt>,
            <doc:tt>low</doc:tt>,
            <doc:tt>normal</doc:tt>,
            <doc:tt>important</doc:tt> or
            <doc:tt>security</doc:tt>.
          </doc:para>
          <doc:para>
            The status <doc:tt>blocked</doc:tt> signifies the package cannot be
            updated, probably due to other dependencies not being met.
            This type allows the GUI tools to show to the user that an update
            exists, but cannot be installed.
            The reason for it not being installed should be put into the update
            description when doing GetUpdateDetail.
          </doc:para>
          <doc:para>
            A filter such as <doc:tt>basename</doc:tt> or <doc:tt>gui</doc:tt>
            is also useful if you want to do filtering on the method to only show
            the main packages rather than the complete list.
            The complete list is available but specifying <doc:tt>none</doc:tt>
            as the filter.
            Using no filter which may be useful in advanced tools or when using
            libpackagekit and searching for an update of a specific name.
            Other filter types may be present, but can be safely ignored of the
            backend does not support them.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="t" name="filter" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A correct filter bitfield, e.g. <doc:tt>none</doc:tt> or <doc:tt>installed;~devel</doc:tt>
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="GetDistroUpgrades">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method should return a list of distribution upgrades that are
            available.
            It should not return updates, only major upgrades.
          </doc:para>
          <doc:para>
            This method typically emits
            <doc:tt>DistroUpgrade</doc:tt>,
            <doc:tt>Error</doc:tt> and
          </doc:para>
        </doc:description>
      </doc:doc>
    </method>

<method name="InstallFiles">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method installs local package files onto the local system.
          </doc:para>
          <doc:para>
            The installer should always install extra dependant packages automatically.
          </doc:para>
          <doc:para>
            This method typically emits
            <doc:tt>Progress</doc:tt>,
            <doc:tt>Status</doc:tt> and
            <doc:tt>Error</doc:tt> and
            <doc:tt>Package</doc:tt>.
          </doc:para>
          <doc:para>
            <doc:tt>Package</doc:tt> enumerated types should be
            <doc:tt>downloading</doc:tt>,
            <doc:tt>updating</doc:tt>,
            <doc:tt>installing</doc:tt> or
            <doc:tt>removing</doc:tt>.
          </doc:para>
        </doc:description>
        <doc:permission>Callers need the org.freedesktop.packagekit.localinstall-untrusted</doc:permission>
      </doc:doc>
      <arg type="t" name="transaction_flags" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              If the transaction is only allowed to install trusted files.
              Unsigned files should not be installed if this parameter is <doc:tt>TRUE</doc:tt>.
            </doc:para>
            <doc:para>
              If this method is can only install trusted files, and the files are unsigned, then
              the backend will send a <doc:tt>ErrorCode(missing-gpg-signature)</doc:tt>.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="as" name="full_paths" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              An array of full path and filenames to packages.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="InstallPackages">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method installs new packages on the local system.
          </doc:para>
          <doc:para>
            The installer should always install extra packages automatically
            as the use could call DependsOn prior to the install if a confirmation
            is required in the UI.
          </doc:para>
          <doc:para>
            This method typically emits
            <doc:tt>Progress</doc:tt>,
            <doc:tt>Status</doc:tt> and
            <doc:tt>Error</doc:tt> and
            <doc:tt>Package</doc:tt>.
          </doc:para>
          <doc:para>
            <doc:tt>Package</doc:tt> enumerated types should be
            <doc:tt>downloading</doc:tt>,
            <doc:tt>updating</doc:tt>,
            <doc:tt>installing</doc:tt> or
            <doc:tt>removing</doc:tt>.
          </doc:para>
        </doc:description>
        <doc:permission>Callers need the org.freedesktop.packagekit.install-untrusted</doc:permission>
      </doc:doc>
      <arg type="t" name="transaction_flags" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              If the transaction is only allowed to install trusted packages.
              Unsigned packages should not be installed if this transaction_flags has <doc:tt>ONLY_TRUSTED</doc:tt>.
            </doc:para>
            <doc:para>
              If this method is can only install trusted packages, and the packages are unsigned, then
              the backend will send a <doc:tt>ErrorCode(missing-gpg-signature)</doc:tt>.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="as" name="package_ids" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              An array of package IDs.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="InstallSignature">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method allows us to install new security keys.
          </doc:para>
        </doc:description>
        <doc:permission>Callers need the org.freedesktop.packagekit.install-signature</doc:permission>
      </doc:doc>
      <arg type="u" name="sig_type" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A key type enum, e.g. <doc:tt>gpg</doc:tt>
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="key_id" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A key ID, e.g. <doc:tt>BB7576AC</doc:tt>
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="package_id" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A PackageID for the package that the user is trying to install
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="RefreshCache">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method should fetch updated meta-data for all enabled repositories.
            This operation should be only scheduled when the computer is idle as
            the network connection will be very active, and will the computer will
            have have non-trivial levels of hard disk and processor activity.
            For these reasons, it should not be done automatically when on battery
            power.
          </doc:para>
          <doc:para>
            When fetching each software repository, ensure to emit RepoDetail for the
            current repository to give the user interface some extra details. Be sure to
            have the "enabled" field set to true, otherwise you wouldn't be fetching
            that repository.
          </doc:para>
          <doc:para>
            This method typically emits
            <doc:tt>Progress</doc:tt>,
            <doc:tt>Error</doc:tt> and
            <doc:tt>RepoDetail</doc:tt>.
          </doc:para>
        </doc:description>
        <doc:permission>Callers need the org.freedesktop.packagekit.refresh-cache</doc:permission>
      </doc:doc>
      <arg type="b" name="force" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              If the caches should be cleaned and reloaded even if there is valid, up to date data.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="RemovePackages">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method removes packages from the local system.
          </doc:para>
          <doc:para>
            This method typically emits
            <doc:tt>Progress</doc:tt>,
            <doc:tt>Status</doc:tt> and
            <doc:tt>Error</doc:tt> and
            <doc:tt>Package</doc:tt>.
          </doc:para>
          <doc:para>
            <doc:tt>Package</doc:tt> enumerated types should be
            <doc:tt>downloading</doc:tt>,
            <doc:tt>updating</doc:tt>,
            <doc:tt>installing</doc:tt> or
            <doc:tt>removing</doc:tt>.
          </doc:para>
        </doc:description>
        <doc:permission>Callers need the org.freedesktop.packagekit.remove</doc:permission>
      </doc:doc>
      <arg type="t" name="transaction_flags" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              If the transaction should be simulated or prepared.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="as" name="package_ids" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              An array of package IDs.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="b" name="allow_deps" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              Either <doc:tt>true</doc:tt> or <doc:tt>false</doc:tt>.
              If <doc:tt>true</doc:tt> allow other packages to be removed with the package,
              but <doc:tt>false</doc:tt> should cause the script to abort if other packages
              are dependant on the package.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="b" name="autoremove" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              Either <doc:tt>true</doc:tt> or <doc:tt>false</doc:tt>.
              This option is only really interesting on embedded devices with a limited amount of
              flash storage.
              It suggests to the packagekit backend that dependencies installed at the same time as
              the package should also be removed if they are not required by anything else.
              For instance, if you install OpenOffice, it might download libneon as a dependency.
              When <doc:tt>auto_remove</doc:tt> is set to true, and you remove OpenOffice then
              libneon will also get removed automatically.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="RepoEnable">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method enables the repository specified.
          </doc:para>
        </doc:description>
        <doc:permission>Callers need the org.freedesktop.packagekit.repo-change</doc:permission>
      </doc:doc>
      <arg type="s" name="repo_id" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A repository identifier, e.g. <doc:tt>fedora-development-debuginfo</doc:tt>
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="b" name="enabled" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              <doc:tt>true</doc:tt> if enabled, <doc:tt>false</doc:tt> if disabled.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="RepoSetData">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method allows arbitary data to be passed to the repository handler.
          </doc:para>
        </doc:description>
        <doc:permission>Callers need the org.freedesktop.packagekit.repo-change</doc:permission>
      </doc:doc>
      <arg type="s" name="repo_id" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A repository identifier, e.g. <doc:tt>fedora-development-debuginfo</doc:tt>
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="parameter" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The backend specific value, e.g. <doc:tt>set-download-url</doc:tt>.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="value" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The backend specific value, e.g. <doc:tt>http://foo.bar.org/baz</doc:tt>.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="RepoRemove">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method removes the repo and optionally removes all the packages
            installed from the repo.
          </doc:para>
        </doc:description>
        <doc:permission>Callers need org.freedesktop.packagekit.repo-change</doc:permission>
      </doc:doc>
      <arg type="t" name="transaction_flags" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              If the transaction should be simulated.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="repo_id" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A repository identifier, e.g. <doc:tt>updates-testing</doc:tt>
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="b" name="autoremove" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              Packages installed from the repo are automatically removed.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="Resolve">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method turns a single package name into a package_id suitable for the
            other methods.
          </doc:para>
          <doc:para>
            If the package is a fully formed package_id, then this should be treated
            as an exact package match. This is useful to find the summary or installed
            status of a package_id returned from other methods.
          </doc:para>
          <doc:para>
            This method typically emits
            <doc:tt>Error</doc:tt> and
            <doc:tt>Package</doc:tt>.
          </doc:para>
          <doc:para>
            <doc:tt>Package</doc:tt> enumerated types should be
            <doc:tt>available</doc:tt> or <doc:tt>installed</doc:tt>.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="t" name="filter" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A correct filter bitfield, e.g. <doc:tt>none</doc:tt> or <doc:tt>installed;~devel</doc:tt>
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="as" name="packages" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              An array of package names, e.g. <doc:tt>scribus-clipart</doc:tt>.
            </doc:para>
            <doc:para>
              The package names are case sensitive, so for instance:
              <doc:tt>Resolve('Packagekit')</doc:tt> would not match <doc:tt>PackageKit</doc:tt>.
            </doc:para>
            <doc:para>
              As a special case, if <doc:tt>Resolve()</doc:tt> is called
              with a name prefixed with <doc:tt>@</doc:tt> then
              this should be treated as a category, for example:
              <doc:tt>@web-development</doc:tt>.
              In this instance, a meta-package should be emitted, for example:
              <doc:tt>web-development;;;meta</doc:tt> with the correct
              installed status and summary for the category.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="SearchDetails">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method allows deeper searching than SearchName().
          </doc:para>
          <doc:para>
            Do not refresh the package cache. This should be fast.
            This is very similar to search-name.
            This should search as much data as possible, including, if possible
            repo names, package summaries, descriptions, licenses and URLs.
          </doc:para>
          <doc:para>
            Try to emit <doc:tt>installed</doc:tt> before
            <doc:tt>available</doc:tt> packages first, as it allows the client
            program to perform the GUI filtering and matching whilst the daemon is
            running the transaction.
          </doc:para>
          <doc:para>
            If the backend includes <doc:tt>installed</doc:tt> and
            <doc:tt>available</doc:tt> versions of the same package when searching
            then the <doc:tt>available</doc:tt> version will have to be filtered
            in the backend.
          </doc:para>
          <doc:para>
            This method typically emits
            <doc:tt>Progress</doc:tt>,
            <doc:tt>Error</doc:tt> and
            <doc:tt>Package</doc:tt>.
          </doc:para>
          <doc:para>
            <doc:tt>Package</doc:tt> enumerated types should be
            <doc:tt>available</doc:tt> or <doc:tt>installed</doc:tt>.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="t" name="filter" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A correct filter bitfield, e.g. <doc:tt>none</doc:tt> or <doc:tt>installed;~devel</doc:tt>
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="as" name="values" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A single word search term with no wildcard chars. The search can
              contain many words separated by spaces. In this case, the
              search operator is <doc:tt>AND</doc:tt> and the words can be found
              in any details section/field. For example, search of
              <doc:tt>GPL games</doc:tt> should returns every games with a GPL
              license.
            </doc:para>
            <doc:para>
              The search should not be treated as case sensitive.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="SearchFiles">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method searches for files on the local system and files in available packages.
          </doc:para>
          <doc:para>
            This should search for files.
            This should allow an application to find out what package owns
            a file on the system.
          </doc:para>
          <doc:para>
            This method typically emits
            <doc:tt>Progress</doc:tt>,
            <doc:tt>Error</doc:tt> and
            <doc:tt>Package</doc:tt>.
          </doc:para>
          <doc:para>
            <doc:tt>Package</doc:tt> enumerated types should be
            <doc:tt>available</doc:tt> or <doc:tt>installed</doc:tt>.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="t" name="filter" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A correct filter bitfield, e.g. <doc:tt>none</doc:tt> or <doc:tt>installed;~devel</doc:tt>
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="as" name="values" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A filename or fully qualified path and filename on the system.
              If the search term begins with a <doc:tt>/</doc:tt> it will be assumed the entire path has been given and only packages that contain this exact path and filename will be returned.
              If the search term does not start with <doc:tt>/</doc:tt> then it should be treated as a single filename, which can be in any directory.
            </doc:para>
            <doc:para>
              The search is case sensitive, and should not be escaped or surrounded in quotes.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="SearchGroups">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method returns packages from a given group enumerated type.
          </doc:para>
          <doc:para>
            Do not refresh the package cache. This should be fast.
          </doc:para>
          <doc:para>
            Try to emit <doc:tt>installed</doc:tt> before
            <doc:tt>available</doc:tt> packages first, as it allows the client
            program to perform the GUI filtering and matching whilst the daemon is
            running the transaction.
          </doc:para>
          <doc:para>
            If the backend includes <doc:tt>installed</doc:tt> and
            <doc:tt>available</doc:tt> versions of the same package when searching
            then the <doc:tt>available</doc:tt> version will have to be filtered
            in the backend.
          </doc:para>
          <doc:para>
            This method typically emits
            <doc:tt>Progress</doc:tt>,
            <doc:tt>Error</doc:tt> and
            <doc:tt>Package</doc:tt>.
          </doc:para>
          <doc:para>
            <doc:tt>Package</doc:tt> enumerated types should be
            <doc:tt>available</doc:tt> or <doc:tt>installed</doc:tt>.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="t" name="filter" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A correct filter bitfield, e.g. <doc:tt>none</doc:tt> or <doc:tt>installed;~devel</doc:tt>
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="as" name="values" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              An enumerated group type, or <doc:tt>unknown</doc:tt>. The search
              cannot contain spaces.
              The following recommendations are made below:
            </doc:para>
            <doc:para>
              If the values strings are prefixed with <doc:tt>category:</doc:tt> then
              the request is treated as a 'category search', for example:
              <doc:tt>category:web-development</doc:tt>.
            </doc:para>
            <doc:para>
              If the values strings are prefixed with <doc:tt>repo:</doc:tt> then
              the request is treated as a 'repository search', for example:
              <doc:tt>repo:fedora-debuginfo</doc:tt>.
              In this instance all packages that were either installed
              from, or can be installed from the <doc:tt>fedora-debuginfo</doc:tt>
              repository would be returned.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="SearchNames">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method searches the package database by package name.
          </doc:para>
          <doc:para>
            Do not refresh the package cache. This should be fast.
          </doc:para>
          <doc:para>
            Try to emit <doc:tt>installed</doc:tt> before
            <doc:tt>available</doc:tt> packages first, as it allows the client
            program to perform the GUI filtering and matching whilst the daemon is
            running the transaction.
          </doc:para>
          <doc:para>
            If the backend includes <doc:tt>installed</doc:tt> and
            <doc:tt>available</doc:tt> versions of the same package when searching
            then the <doc:tt>available</doc:tt> version will have to be filtered
            in the backend.
          </doc:para>
          <doc:para>
            The search methods should return all results in all repositories.
            This may mean that multiple versions of package are returned.
            If this is not what is wanted by the client program, then the
            <doc:tt>newest</doc:tt> filter should be used.
          </doc:para>
          <doc:para>
            This method typically emits
            <doc:tt>Progress</doc:tt>,
            <doc:tt>Error</doc:tt> and
            <doc:tt>Package</doc:tt>.
          </doc:para>
          <doc:para>
            <doc:tt>Package</doc:tt> enumerated types should be
            <doc:tt>available</doc:tt> or <doc:tt>installed</doc:tt>.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="t" name="filter" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A correct filter bitfield, e.g. <doc:tt>none</doc:tt> or <doc:tt>installed;~devel</doc:tt>
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="as" name="values" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A single word search term with no wildcard chars. The search term
              can contain many words separated by spaces. In this case, the
              search operator is <doc:tt>AND</doc:tt>. For example, search of
              <doc:tt>gnome power</doc:tt> should returns
              <doc:tt>gnome-power-manager</doc:tt> but not
              <doc:tt>gnomesword</doc:tt> or <doc:tt>powertop</doc:tt>.
            </doc:para>
            <doc:para>
              The search should not be treated as case sensitive.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="UpdatePackages">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method updates existing packages on the local system.
          </doc:para>
          <doc:para>
            The installer should always update extra packages automatically to fulfil dependencies.
          </doc:para>
          <doc:para>
            This should allow an application to find out what package owns a file on the system.
          </doc:para>
          <doc:para>
            This method typically emits
            <doc:tt>Progress</doc:tt>,
            <doc:tt>Status</doc:tt> and
            <doc:tt>Error</doc:tt> and
            <doc:tt>Package</doc:tt>.
          </doc:para>
        </doc:description>
        <doc:permission>Callers need the org.freedesktop.packagekit.update-package</doc:permission>
      </doc:doc>
      <arg type="t" name="transaction_flags" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              If the transaction is only allowed to update to trusted packages.
              Unsigned packages should not be installed if this transaction_flags has <doc:tt>ONLY_TRUSTED</doc:tt>.
            </doc:para>
            <doc:para>
              If this method is can only update trusted packages, and the packages are unsigned, then
              the backend will send a <doc:tt>ErrorCode(missing-gpg-signature)</doc:tt>.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="as" name="package_ids" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              An array of package IDs.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="WhatProvides">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method returns packages that provide the supplied attributes.
            This method is useful for finding out what package(s) provide a modalias
            or GStreamer codec string.
          </doc:para>
          <doc:para>
            This method typically emits
            <doc:tt>Progress</doc:tt>,
            <doc:tt>Status</doc:tt> and
            <doc:tt>Error</doc:tt> and
            <doc:tt>Package</doc:tt>.
          </doc:para>
          <doc:para>
            <doc:tt>Package</doc:tt> enumerated types should be
            <doc:tt>available</doc:tt> or <doc:tt>installed</doc:tt>.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="t" name="filter" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A correct filter bitfield, e.g. <doc:tt>none</doc:tt> or <doc:tt>installed;~devel</doc:tt>
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="as" name="values" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The data to send to the backend to get the packages.
              Note: This is backend specific.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="UpgradeSystem">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method perfoms a distribution upgrade to the specified
            version.
          </doc:para>
          <doc:para>
            This method typically emits
            <doc:tt>Progress</doc:tt>,
            <doc:tt>Status</doc:tt> and
            <doc:tt>Error</doc:tt> and
            <doc:tt>Package</doc:tt>.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="t" name="transaction_flags" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              If this method is can only install trusted files, and the files are unsigned, then
              the backend will send a <doc:tt>ErrorCode(missing-gpg-signature)</doc:tt>.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="distro_id" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The distribution ID to upgrade to, e.g. <doc:tt>fedora-14</doc:tt>.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="u" name="upgrade_kind" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The type of upgrade, e.g. <doc:tt>minimal</doc:tt>, <doc:tt>default</doc:tt> or <doc:tt>complete</doc:tt>.
              Minimal upgrades will download the smallest amount of data
              before launching a installer.
              The default is to download enough data to launch a full
              graphical installer, but a complete upgrade will be
              required if there is no internet access during install time.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<method name="RepairSystem">
      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
      <doc:doc>
        <doc:description>
          <doc:para>
            This method recovers the package management system from e.g.
            unsatisfied dependencies of installed packages.
          </doc:para>
          <doc:para>
            This method typically emits
            <doc:tt>Progress</doc:tt>,
            <doc:tt>Status</doc:tt> and
            <doc:tt>Error</doc:tt> and
            <doc:tt>Package</doc:tt>.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="t" name="transaction_flags" direction="in">
        <doc:doc>
          <doc:summary>
            <doc:para>
              If the transaction is only allowed to install trusted packages.
              Unsigned packages should not be installed if this transaction_flags has <doc:tt>ONLY_TRUSTED</doc:tt>.
            </doc:para>
            <doc:para>
              If this method is can only install trusted packages, and the packages are unsigned, then
              the backend will send a <doc:tt>ErrorCode(missing-gpg-signature)</doc:tt>.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </method>

<signal name="Category">
      <doc:doc>
        <doc:description>
          <doc:para>
            This signal send information about a collection category
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="s" name="parent_id" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The parent identifier, e.g. <doc:tt>applications</doc:tt>.
              If the category is a root entry, use a blank parent.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="cat_id" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The category identifier, e.g. <doc:tt>applications;system-tools</doc:tt>.
              The identifier does not have to be related to the <doc:tt>parent_id</doc:tt>
              in any way.
              A menu tree is made from multiple Category signals.
              The tree does not have any depth or bredth limits, although it should be kept
              to less than about 100 entries as this will be shown to the user in a menu.
            </doc:para>
            <doc:para>
              The <doc:tt>cat_id</doc:tt> will be sent as a parameter to <doc:tt>SearchGroup</doc:tt>
              so you may have to prefix or otherwise identify the ID to not confuse the search method.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="name" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The localised name of the category, e.g. <doc:tt>System Tools</doc:tt>.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="summary" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The localised category summary, e.g. <doc:tt>Tools for mangaing system state</doc:tt>.
              This is not normally shown in the menus, but may be shown in helper popups.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="icon" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The icon name for the category, e.g. <doc:tt>server-cfg</doc:tt>.
              If the icon is not known, then it should be set to <doc:tt>image-missing</doc:tt>.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </signal>

<signal name="Details">
      <doc:doc>
        <doc:description>
          <doc:para>
            This signal allows the backend to convey more details about the package.
          </doc:para>
        </doc:description>
      </doc:doc>
      <annotation name="org.qtproject.QtDBus.QtTypeName.Out0" value="QVariantMap"/>
      <arg type="a{sv}" name="data" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The details about a specific package. The available keys are here:
            </doc:para>
            <doc:list>
              <doc:item>
                <doc:term>package_id</doc:term>
                <doc:definition>The package ID [<doc:tt>s</doc:tt>]</doc:definition>
              </doc:item>
              <doc:item>
                <doc:term>license</doc:term>
                <doc:definition>The license string, e.g. <doc:tt>GPLv2+</doc:tt> [<doc:tt>s</doc:tt>]</doc:definition>
              </doc:item>
              <doc:item>
                <doc:term>group</doc:term>
                <doc:definition>The enumerated package group description [<doc:tt>u</doc:tt>]</doc:definition>
              </doc:item>
              <doc:item>
                <doc:term>detail</doc:term>
                <doc:definition>The multi-line package description in markdown syntax.[<doc:tt>s</doc:tt>]</doc:definition>
              </doc:item>
              <doc:item>
                <doc:term>url</doc:term>
                <doc:definition>The upstream project homepage [<doc:tt>s</doc:tt>]</doc:definition>
              </doc:item>
              <doc:item>
                <doc:term>size</doc:term>
                <doc:definition>The size of the package in bytes [<doc:tt>t</doc:tt>]</doc:definition>
              </doc:item>
              <doc:item>
                <doc:term>summary</doc:term>
                <doc:definition>The one line package summary, e.g. Clipart for OpenOffice [<doc:tt>s</doc:tt>]</doc:definition>
              </doc:item>
            </doc:list>
          </doc:summary>
        </doc:doc>
      </arg>
    </signal>

<signal name="ErrorCode">
      <doc:doc>
        <doc:description>
          <doc:para>
            This signal is used to report errors back to the session program.
          </doc:para>
          <doc:para>
            Errors should only be send on fatal abort.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="u" name="code" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              Enumerated type, e.g. <doc:tt>no-network</doc:tt>.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="details" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              Long description or error, e.g. <doc:tt>failed to connect to mytry.xml</doc:tt>
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </signal>

<signal name="Files">
      <doc:doc>
        <doc:description>
          <doc:para>
            This signal is used to push file lists from the backend to the session.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="s" name="package_id" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The Package ID that called the method.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="as" name="file_list" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The file list as an array.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </signal>

<signal name="Finished">
      <doc:doc>
        <doc:description>
          <doc:para>
            This signal is used to signal that the transaction has finished.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="u" name="exit" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The PkExitEnum describing the exit status of the transaction.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="u" name="runtime" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The amount of time in milliseconds that the transaction ran for.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </signal>

<signal name="Package">
      <doc:doc>
        <doc:description>
          <doc:para>
            This signal allows the backend to communicate packages to the session.
          </doc:para>
          <doc:para>
            If updating, as packages are updated then emit them to the screen.
            This allows a summary to be presented after the transaction.
          </doc:para>
          <doc:para>
            When returning results from a search always return
            <doc:tt>installed</doc:tt> before <doc:tt>available</doc:tt> for
            the same package name.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="u" name="info" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A valid <doc:tt>info</doc:tt> enumerated type
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="package_id" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              This identifier is of the form <doc:tt>name;version;arch;data</doc:tt>
              in a single string and is meant to represent a single package
              unique across all local and remote data stores.
            </doc:para>
            <doc:para>
              For a remote, not-installed package the data field should
              be set as the repository identifier or repository name.
            </doc:para>
            <doc:para>
              The data field for an installed package must be prefixed
              with <doc:tt>installed</doc:tt> as this is used to identify
              which packages are installable or installed in the client
              tools.
            </doc:para>
            <doc:para>
              As a special extension, if the package manager is able to
              track which repository a package was originally installed
              from, then the data field can be set to
              <doc:tt>installed:REPO-NAME</doc:tt> which allows the
              frontend client to advise the user of the package origin.
            </doc:para>
            <doc:para>
              The data field for a non-installed local package must be
              <doc:tt>local</doc:tt> as this signifies a repository name is
              not available and that package resides locally on the
              client system rather than in any specific repository.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="summary" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The one line package summary, e.g. Clipart for OpenOffice
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </signal>

<signal name="Packages">
      <doc:doc>
        <doc:description>
          <doc:para>
            This signal allows the backend to communicate multiple packages to the session.
          </doc:para>
          <doc:para>
            If updating, as packages are updated then emit them to the screen.
            This allows a summary to be presented after the transaction.
          </doc:para>
          <doc:para>
            When returning results from a search always return
            <doc:tt>installed</doc:tt> before <doc:tt>available</doc:tt> for
            the same package name.
          </doc:para>
          <doc:para>
            This signal was added to the API in PackageKit 1.2.6. It will only be emitted
            by the daemon if the client sets the <doc:tt>supports-plural-signals=true</doc:tt>
            hint on the transaction using <doc:tt>SetHints()</doc:tt>.
          </doc:para>
          <doc:para>
            Even if this signal is used by the transaction, it may also still emit
            <doc:tt>Package</doc:tt> signals at other times. The content of one signal will
            never duplicate the content of another. Clients must be prepared to handle both
            signals within the same transaction.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="a(uss)" name="packages" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              An array of package details. Each array element is one package,
              as documented for the <doc:tt>Package</doc:tt> signal.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <annotation name="org.qtproject.QtDBus.QtTypeName.Out0" value="QVariantList"/>
    </signal>

<signal name="RepoDetail">
      <doc:doc>
        <doc:description>
          <doc:para>
            This signal describes a repository on the system.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="s" name="repo_id" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The repository ID.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="description" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A description of the repository.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="b" name="enabled" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              If the repository is enabled and in use.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </signal>

<signal name="RepoSignatureRequired">
      <doc:doc>
        <doc:description>
          <doc:para>
            This signal is emitted when a transaction is not possible due to a missing security
            certificate.
          </doc:para>
          <doc:para>
            Some backends support repositories which use a cryptographic
            signature, such as GPG. If a package cannot be installed
            because it is signed with a key that has not been verified,
            this signal is generated so the user can choose to accept or
            decline the key.
          </doc:para>
          <doc:para>
            This signal includes information that can be used to verify
            that the key should be trusted, such as a URL for the company
            or person who owns the key, the key's ID, the userid of
            the key creator, and the date the key was generated.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="s" name="package_id" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A package ID for the package that is trying to be installed
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="repository_name" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The name of the repository associated with the provided key.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="key_url" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The URL provided with the key.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="key_userid" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The user id associated with the key.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="key_id" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A unique identifier for the key.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="key_fingerprint" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The hashed fingerprint of the key.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="key_timestamp" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The date the key was created.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="u" name="type" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The type of signature used. <doc:tt>gpg</doc:tt>, for example.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </signal>

<signal name="EulaRequired">
      <doc:doc>
        <doc:description>
          <doc:para>
            This signal is emitted when a transaction is not possible due to a EULA that needs to
            be agreed to at install time.
          </doc:para>
          <doc:para>
            Some backends support EULAs, which have to be agreed to before the install can proceed.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="s" name="eula_id" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The <doc:tt>eula_id</doc:tt> which identifies the EULA - this is provided
              so that if a specific EULA has previously agreed to a EULA from Acme Corp it is
              not asked again.
              An example <doc:tt>eula_id</doc:tt>'s is <doc:tt>vmware5_single_user</doc:tt>.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="package_id" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A package ID for the package that is trying to be installed.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="vendor_name" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The vendor that is providing the EULA.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="license_agreement" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The full text EULA.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </signal>

<signal name="MediaChangeRequired">
      <doc:doc>
        <doc:description>
          <doc:para>
            This signal is emitted when a transaction needsneeds a different media
            to grab the packages.
          </doc:para>
          <doc:para>
            Some backends support Media changing, which will fail the transaction each time it needs
            a new media.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="u" name="media_type" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              Enumerated type, e.g. <doc:tt>dvd</doc:tt>.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="media_id" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The <doc:tt>media_id</doc:tt> which identifies the Media - this is provided
              so that if DeviceKit or another program is able to identify the right media
              before continuing, note however that it's not the DeviceKit oblication to
              check the media when the transaction is re-scheduled this is the backend task.
              An example <doc:tt>media_id</doc:tt>'s is <doc:tt>Debian testing amd64 Bin-1</doc:tt>.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="media_text" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              Might be used for the disk label too, something like <doc:tt>Fedora Disk 1</doc:tt>
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </signal>

<signal name="RequireRestart">
      <doc:doc>
        <doc:description>
          <doc:para>
            This signal is sent when the session program should notify the user that a restart is
            required.
          </doc:para>
          <doc:para>
            This is optional, but highly recommended.
          </doc:para>
          <doc:para>
            This can be sent as many times as needed by the backend script.
            PackageKit will always choose the 'worst' method in the UI notification.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="u" name="type" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              One of <doc:tt>system</doc:tt>, <doc:tt>application</doc:tt> or
              <doc:tt>session</doc:tt>.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="package_id" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The package ID that caused the restart notifier.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </signal>

<signal name="Transaction">
      <doc:doc>
        <doc:description>
          <doc:para>
            This signal is sent when more details are required about a specific transaction.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="o" name="object_path" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The transaction ID of the old transaction.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="timespec" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The timespec of the old transaction in ISO8601 format.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="b" name="succeeded" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              If the transaction succeeded.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="u" name="role" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The role enumerated type.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="u" name="duration" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The duration of the transaction in milliseconds.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="data" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              Any data associated with the transaction.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="u" name="uid" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The user ID of the user that scheduled the action.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="cmdline" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The command line of the tool that scheduled the action, e.g.
              <doc:tt>/usr/bin/gpk-application</doc:tt>.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </signal>

<signal name="UpdateDetail">
      <doc:doc>
        <doc:description>
          <doc:para>
            This signal is sent when more details are required about a specific update.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="s" name="package_id" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The package ID
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="as" name="updates" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A list of package_id's that are to be updated.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="as" name="obsoletes" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A list of package_id's that are to be obsoleted.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="as" name="vendor_urls" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A list of URLs with more details on the update, e.g. a page with more
              information on the update.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="as" name="bugzilla_urls" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A list of bugzilla URL with more details on the update.
              If no URLs are available then this field should be left empty.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="as" name="cve_urls" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A list of CVE URLs with more details on the security advisory.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="u" name="restart" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A valid restart type, e.g. <doc:tt>system</doc:tt>.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="update_text" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The update text describing the update.
            </doc:para>
            <doc:para>
              If formatting is required, then markdown syntax should be used,
              e.g. <doc:tt>This is **critically** important</doc:tt>
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="changelog" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The ChangeLog text describing the changes since the last version.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="u" name="state" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The state of the update, e.g. <doc:tt>stable</doc:tt> or
              <doc:tt>testing</doc:tt>.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="issued" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The ISO8601 encoded date that the update was issued.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="updated" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The ISO8601 encoded date that the update was updated.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </signal>

<signal name="UpdateDetails">
      <doc:doc>
        <doc:description>
          <doc:para>
            This signal allows the backend to communicate specific details for
            multiple updates to the session. It is equivalent to the sequential
            emission of N <doc:tt>UpdateDetail</doc:tt> signals.
          </doc:para>
          <doc:para>
            This signal was added to the API in PackageKit 1.2.6. It will only be emitted
            by the daemon if the client sets the <doc:tt>supports-plural-signals=true</doc:tt>
            hint on the transaction using <doc:tt>SetHints()</doc:tt>.
          </doc:para>
          <doc:para>
            Even if this signal is used by the transaction, it may also still emit
            <doc:tt>UpdateDetail</doc:tt> signals at other times. The content of one signal will
            never duplicate the content of another. Clients must be prepared to handle both
            signals within the same transaction.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="a(sasasasasasussuss)" name="details" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              An array of update details. Each array element is one update,
              as documented for the <doc:tt>UpdateDetail</doc:tt> signal.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <annotation name="org.qtproject.QtDBus.QtTypeName.Out0" value="QVariantList"/>
    </signal>

<signal name="DistroUpgrade">
      <doc:doc>
        <doc:description>
          <doc:para>
            This signal allows the backend to communicate distribution
            upgrades to the session.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="u" name="type" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A valid upgrade enumerated type, e.g. <doc:tt>stable</doc:tt>
              or <doc:tt>unstable</doc:tt>
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="name" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The short name of the distribution, e.g. <doc:tt>Fedora Core 10 RC1</doc:tt>
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="s" name="summary" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The multi-line description of the release.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </signal>

<signal name="ItemProgress">
      <doc:doc>
        <doc:description>
          <doc:para>
            This signal allows the backend to send infomation about
            package or repository progress when using Simultanous mode.
          </doc:para>
        </doc:description>
      </doc:doc>
      <arg type="s" name="id" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              A valid package_id, e.g. <doc:tt>hal;0.1.0;i386;fedora</doc:tt>
              or a repo_id.
            </doc:para>
            <doc:para>
              A repo_id may only be used when running RefreshCache.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="u" name="status" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The status enumerated value that is being completed.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
      <arg type="u" name="percentage" direction="out">
        <doc:doc>
          <doc:summary>
            <doc:para>
              The percentage of this package action is completed.
            </doc:para>
          </doc:summary>
        </doc:doc>
      </arg>
    </signal>

<signal name="Destroy">
      <doc:doc>
        <doc:description>
          <doc:para>
            This signal is sent when the transaction has been destroyed and is
            no longer available for use.
          </doc:para>
        </doc:description>
      </doc:doc>
    </signal>

</interface>
</node>

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