dde-application-manager/api/dbus/org.desktopspec.ApplicationManager1.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">
        <property type="ao" access="read" name="List" />

        <method name="Application">
            <arg type="s" name="id" direction="in" />
            <arg type="o" name="application" direction="out" />
        </method>

        <method name="Identify">
            <arg type="h" name="pidfd" direction="in" />

            <arg type="s" name="id" direction="out" />
            <arg type="o" name="application" direction="out" />
            <arg type="o" name="application_instance" direction="out" />

            <annotation
                name="org.freedesktop.DBus.Description"
                value="Given a pidfd,
                       this method return a destkop file id,
                       an application instance object path,
                       as well as an application object path.

                       NOTE:
                       1. You should use pidfd_open(2) to get a pidfd."
            />
        </method>

        <method name="Launch">
            <arg type="s" name="id" direction="in" />
            <arg type="s" name="action" direction="in" />
            <arg type="as" name="fields" direction="in" />
            <arg type="a{sv}" name="options" direction="in" />
            <arg type="o" name="job" direction="out" />
            <annotation name="org.qtproject.QtDBus.QtTypeName.In3" value="QVariantMap"/>
            <annotation
                name="org.freedesktop.DBus.Description"
                value="Given a desktop file id,
                       this method will launch a desktop application.

                       Check description of the `Launch` method in
                       `org.desktopspec.ApplicationManager1.Application`
                       interface for futher infomation."
            />
        </method>
    </interface>
</node>