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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 _as_chunk(self):
 """ A method to return a chunk of data that can be combined for constructed method values :return: A native Python value that can be added together. Examples include byte strings, unicode strings or tuples. """


        if self._chunks_offset == 0:
            return self.contents
        return self.contents[self._chunks_offset:]