code: def get_llvm_tool_path() -> str:
      return os.environ.get("LLVM_TOOL_PATH", "/usr/local/opt/llvm/bin")
  
file_path: pytorch/tools/code_coverage/package/oss/utils.py
imports: import os
  import subprocess
  from typing import List, Optional
  from ..util.setting import CompilerType, TestType, TOOLS_FOLDER
  from ..util.utils import print_error, remove_file
label_desc: Use image node_id 4 for calling a global function with example usage: get_llvm_tool_path() and returns: os