code: def mock_initial_search(requests_mock: Mocker, url: str) -> str:
      search_task_id = random_id()
      requests_mock.post(
          url + "/public/api/v2/search/initial",
          json={
              "fileUploadId": random_id(),
              "searchTaskId": search_task_id,
              "searchType": "INITIAL",
              "status": "SUBMITTED",
              "extractFeatures": "true",
              "returnScores": "false",
              "createdAt": 1633302145414,
          },
      )
      return search_task_id
  
imports: import itertools
  import tempfile
  from random import randint
  from typing import Dict, List, Optional, Union
  import pandas
  from requests_mock import Mocker
  from upgini.metadata import ProviderTaskMetadataV2
label_desc: Use image node_id 3 for calling a global function with example usage: mock_initial_search(requests_mock, url) and returns: search_task_id