code: def test_get_assistant_instructions():
      """
      Test function to create a new GPTAssistantAgent, set its instructions, retrieve the instructions,
      and assert that the retrieved instructions match the set instructions.
      """
      name = "For test_get_assistant_instructions"
      assistant = GPTAssistantAgent(
          name,
          instructions="This is a test",
          llm_config={
              "config_list": config_list,
          },
      )
  
      instruction_match = (
          assistant.get_assistant_instructions() == "This is a test"
      )
      assistant.delete_assistant()
  
      assert instruction_match is True
  
file_path: autogen/test/agentchat/contrib/test_gpt_assistant.py
imports: import pytest
  import os
  import sys
  import autogen
  from autogen import OpenAIWrapper
  from conftest import skip_openai
  from test_assistant_agent import KEY_LOC, OAI_CONFIG_LIST
label_desc: Use image node_id 3 for calling a global function with example usage: test_get_assistant_instructions() without return types