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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 get_pdu_length(self):
 """ Returns info about the PDU length. """

        logger.info("getting PDU length")
        requested_ = c_uint16()
        negotiated_ = c_uint16()
        code = self.library.Cli_GetPduLength(self.pointer, byref(requested_), byref(negotiated_))
        check_error(code)

        return negotiated_.value