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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _ExtractPathSpecsFromFile(self, file_entry):
 """Extracts path specification from a file. Args: file_entry (dfvfs.FileEntry):
 file entry that refers to the file. Yields: dfvfs.PathSpec: path specification of a file entry found in the file. """

    produced_main_path_spec = False
    for data_stream in file_entry.data_streams:
      # Make a copy so we don't make the changes on a path specification
      # directly. Otherwise already produced path specifications can be
      # altered in the process.
      path_spec = copy.deepcopy(file_entry.path_spec)
      if data_stream.name:
        setattr(path_spec, 'data_stream', data_stream.name)
      yield path_spec

      if not data_stream.name:
        produced_main_path_spec = True

    if not produced_main_path_spec:
      yield file_entry.path_spec