code: def get_config_applied_machine_groups(self, project_name, config_name):
          
  
          headers = {}
          params = {}
          resource = "/configs/" + config_name + "/machinegroups"
          (resp, header) = self._send("GET", project_name, None, resource, params, headers)
          return GetConfigAppliedMachineGroupsResponse(resp, header)
docs: get machine group names where the logtail config applies to
          Unsuccessful opertaion will cause an LogException.
  
          :type project_name: string
          :param project_name: the Project name 
  
          :type config_name: string
          :param config_name: the logtail config name used to apply
  
          :return: GetConfigAppliedMachineGroupsResponse
          
          :raise: LogException