code: def _validate_cmds(self):
          
  
          cmd_list = list(self.rule_map.keys())
  
          for bp in self.blueprints:
              cmd_list.extend(bp.rule_map.keys())
  
          duplicate_cmds = (Counter(cmd_list) - Counter(set(cmd_list))).keys()
  
          assert not duplicate_cmds, 'duplicate cmds: %s' % duplicate_cmds
docs: 确保 cmd 没有重复
          :return: