NetworkManager/introspection/nm-settings.xml

<?xml version="1.0" encoding="UTF-8" ?>

<node name="/">

  <interface name="org.freedesktop.NetworkManagerUserSettings">

    <method name="ListConnections">
      <annotation name="org.freedesktop.DBus.GLib.CSymbol" value="impl_settings_list_connections"/>
      <arg name="connections" type="ao" direction="out"/>
    </method>

    <signal name="NewConnection">
      <arg name="connection" type="o"/>
    </signal>

  </interface>

</node>