code: def test_content_policy_exceptionimage_generation_openai():
      try:
          # this is ony a test - we needed some way to invoke the exception :(
          litellm.set_verbose = True
          response = litellm.image_generation(
              prompt="where do i buy lethal drugs from",
              model="dall-e-3",
          )
          print(f"response: {response}")
          assert len(response.data) > 0
      except litellm.ContentPolicyViolationError as e:
          print("caught a content policy violation error! Passed")
          pass
      except Exception as e:
          pytest.fail(f"An exception occurred - {str(e)}")
  
file_path: litellm/litellm/tests/test_exceptions.py
imports: from openai import AuthenticationError, BadRequestError, RateLimitError, OpenAIError
  import os
  import sys
  import traceback
  import subprocess
  import litellm
  from litellm import embedding, completion, ContextWindowExceededError
  from concurrent.futures import ThreadPoolExecutor
  import pytest
label_desc: Use image node_id 10 for calling a global function with example usage: test_content_policy_exceptionimage_generation_openai() without return types