code: def headers():
      return {
          "Connection": "keep-alive",
          "Authorization": "TOK:<MY_TOKEN>",
      }
  
file_path: ray/cpp/test_submit_cpp_job.py
imports: import os
  import shutil
  import sys
  import tempfile
  import pytest
  from ray._private.test_utils import format_web_url, wait_for_condition, wait_until_server_available
  from ray.job_submission import JobStatus, JobSubmissionClient
  from ray.tests.conftest import _ray_start
label_desc: Use image node_id 1 for calling a global function with example usage: headers() and returns: dict