code: def _comment_github_issue(self, comment: str) -> bool:
      github_issue_number = self.test.get(Test.KEY_GITHUB_ISSUE_NUMBER)
      if not github_issue_number:
          return False
      issue = self.ray_repo.get_issue(github_issue_number)
      issue.create_comment(comment)
      return True
  
file_path: ray/release/ray_release/test_automation/ci_state_machine.py
imports: from ray_release.test_automation.state_machine import TestStateMachine, DEFAULT_ISSUE_OWNER
  from ray_release.test import Test, TestState
label_desc: Use image node_id 4 for calling the CITestStateMachine obj's underlying member method code with example usage: obj._comment_github_issue(comment) and returns: True, False