docs: def rollback(self, rb_id=1):
          """
          Rollback the last committed configuration.
  
          :param rb_id: Rollback a specific number of steps. Default: 1
          """
          rpc_command = '<Unlock/><Rollback><Previous>{rb_id}</Previous></Rollback><Lock/>'.format(rb_id=rb_id)
          self._execute_rpc(rpc_command)