code: def test_http_response(self):
      tasks = set(
          task["task"]
          if ":" not in task["task"]
          else task["task"][: task["task"].index(":")]
          for task in task_list
      )
      for task in sorted(tasks):
          if task in SPECIFIC_BUILDS:
              for build in SPECIFIC_BUILDS[task]:
                  mod = importlib.import_module(
                      ("parlai.tasks." + task + "." + build)
                  )
                  for f in mod.RESOURCES:
                      with self.subTest(f"{task}: {f.url}"):
                          f.check_header()
          else:
              try:
                  mod = importlib.import_module(
                      ("parlai.tasks." + task + ".build")
                  )
                  file_list = mod.RESOURCES
              except (ModuleNotFoundError, AttributeError):
                  continue
              for f in file_list:
                  with self.subTest(f"{task}: {f.url}"):
                      f.check_header()
  
imports: import unittest
  import importlib
  from parlai.tasks.task_list import task_list
label_desc: Use image node_id 1 for calling the TestUtils obj's underlying member method code with example usage: obj.test_http_response() without return types