dbus_bindings/dbus-objectmanager.xml

<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN"
                      "http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
<node name="/" xmlns:tp="http://telepathy.freedesktop.org/wiki/DbusSpec#extensions-v0">
  <interface name="org.freedesktop.DBus.ObjectManager">
    <method name="GetManagedObjects">
      <arg type="a{oa{sa{sv}}}" name="object_paths_interfaces_and_properties" direction="out"/>
    </method>
    <signal name="InterfacesAdded">
      <arg type="o" name="object_path"/>
      <arg type="a{sa{sv}}" name="interfaces_and_properties"/>
    </signal>
    <signal name="InterfacesRemoved">
      <arg type="o" name="object_path"/>
      <arg type="as" name="interfaces"/>
    </signal>
  </interface>
</node>