code: def test_source_path(path=None):
      return _join_path(
          os.path.join(source_path(), context.project_path), path
      )
  
imports: import errno
  import functools
  import json
  import os
  import sys
  import threading
  import six
label_desc: Use image node_id 40 for calling a global function with example usage: test_source_path(path) and returns: _join_path