dde-application-manager/api/dbus/org.desktopspec.ApplicationManager1.Instance.xml

<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN" "https://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
<node>
    <interface name="org.desktopspec.ApplicationManager1.Instance">
        <property name="Application" type="o" access="read">
            <annotation
                name="org.freedesktop.DBus.Description"
                value="Object path of the Application. 
                       That DBus object will impelement
                       org.desktopspec.ApplicationManager1.Application.
                       NOTE:
                       If the application is uninstalled, this object path
                       will be set to `/`."
            />
        </property>

        <property name="SystemdUnitPath" type="o" access="read">
            <annotation
                name="org.freedesktop.DBus.Description"
                value="The systemd unit object path of this instance
                       under systemd user daemon.
                       Some other DE compoments can use this path to
                       use the cgroup interface provided by systemd.
                       NOTE:
                       This property MIGHT be empty
                       if this instance is not managed by systemd."
            />
        </property>

        <property name="Launcher" type="s" access="read">
            <annotation
                name="org.freedesktop.DBus.Description"
                value="This property indicates which Application
                       launcher started this instance." 
            />
        </property>

        <property name="Orphaned" type="b" access="read">
            <annotation
                name="org.freedesktop.DBus.Description"
                value="This property indicates that the application 
                       to which the instance belonged has been removed."
            />
        </property>
        <method name="KillAll">
            <arg type="i" name="signal" direction="in"/> 
            <annotation name="org.freedesktop.DBus.Description" 
                        value="Force kill this instance.
                                ATTENTION: All processes which launched by 
                                this instance will be killed." />
        </method>
    </interface>
</node>