def set_lswitch_ext_id(self, lswitch_id, ext_id, if_exists=True):
     return cmd.LSwitchSetExternalIdCommand(self, lswitch_id, ext_id[0],
                                            ext_id[1], if_exists)
 def set_lswitch_ext_id(self, lswitch_id, ext_id):
     return cmd.LSwitchSetExternalIdCommand(self, lswitch_id, ext_id[0],
                                            ext_id[1])