g_dbus_connection_call_sync

function g_dbus_connection_call_sync(

  connection: PGDBusConnection;

  bus_name: Pgchar;

  object_path: Pgchar;

  interface_name: Pgchar;

  method_name: Pgchar;

  parameters: PGVariant;

  reply_type: PGVariantType;

  flags: TGDBusCallFlags;

  timeout_msec: gint;

  cancellable: PGCancellable;

  error: PPGError

):PGVariant;