@staticmethod
  def WalkFileTree(pattern, root=_SRC_DATA_DIR):
    # Walk tree for jar files to directly include
    matcher = re.compile(pattern)
    for root, unused_dirs, file_names in os.walk(root):
      for file_name in file_names:
        if matcher.match(file_name):
          yield os.path.join(root, file_name)
uses multiprocess Process to call _wrapper_func in subprocess
dataset/ETHPy150Open google/apis-client-generator/src/googleapis/codegen/configuration_test.py/ConfigurationTest.WalkFileTree--crossover with--dataset/ETHPy150Open cimatosa/jobmanager/jobmanager/progress.py/Loop.start