for the root object manager

bluez.xml

<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN"
"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
<node><interface name="org.freedesktop.DBus.Introspectable"><method name="Introspect"><arg name="xml" type="s" direction="out"/>
</method></interface><interface name="org.freedesktop.DBus.ObjectManager"><method name="GetManagedObjects"><arg name="objects" type="a{oa{sa{sv}}}" direction="out"/>
</method><signal name="InterfacesAdded"><arg name="object" type="o"/>
<arg name="interfaces" type="a{sa{sv}}"/>
</signal>
<signal name="InterfacesRemoved"><arg name="object" type="o"/>
<arg name="interfaces" type="as"/>
</signal>
</interface><node name="org"/></node>