code: def members(self):
          
          result = list()
          for member in self.run_command(command="replSetGetStatus", is_eval=False)['members']:
              result.append({
                  "_id": member['_id'],
                  "host": member["name"],
                  "server_id": self._servers.host_to_server_id(member["name"]),
                  "state": member['state']
              })
          return result
docs: return list of members information