code: def _ReadMemberFooter(self, file_object):
      
      file_offset = file_object.get_offset()
      member_footer = self._ReadStructure(
          file_object, file_offset, self._MEMBER_FOOTER_SIZE,
          self._MEMBER_FOOTER, 'member footer')
  
      self.uncompressed_data_size = member_footer.uncompressed_data_size
docs: Reads a member footer.
  
      Args:
        file_object (FileIO): file-like object to read from.
  
      Raises:
        FileFormatError: if the member footer cannot be read.