<interface name="org.freedesktop.DBus.Properties">
    <method name="Get">
        <arg type="s" direction="in" />
        <arg type="s" direction="in" />
        <arg type="v" direction="out" />
    </method>
    <method name="GetAll">
        <arg type="s" direction="in" />
        <arg type="a{sv}" direction="out" />
    </method>
    <signal name="PropertiesChanged">
        <arg type="s" direction="out" />
        <arg type="a{sv}" direction="out" />
        <arg type="as" direction="out" />
    </signal>
</interface>