code: def files_path():
      return TEST_FILES_DIRECTORY
  
imports: import pathlib
  import os
  import shutil
  import subprocess
  import pytest
  import graphviz
  from graphviz import _tools
  from graphviz.backend import rendering
  import _common
label_desc: Use image node_id 1 for calling a global function with example usage: files_path() and returns: TEST_FILES_DIRECTORY