code: def necessary_files_unavailable():
      return {
          "condition": not (
              LLAMA_MODEL_PATH.exists() and GPT_SRC_PATH.exists()
          ),
          "reason": f"Required files are not present (see README): {LLAMA_MODEL_PATH.as_posix()} + {GPT_SRC_PATH.as_posix()}",
      }
  
imports: import json
  import shutil
  import sys
  from pathlib import Path
  from string import Template
  from unittest.mock import patch
  import pytest
  import requests
  import test_utils
  import torch
  import yaml
  from model_archiver.model_archiver_config import ModelArchiverConfig
  from ts.torch_handler.unit_tests.test_utils.mock_context import MockContext
label_desc: Use image node_id 1 for calling a global function with example usage: necessary_files_unavailable() and returns: dict