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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 _x_secure_ok(self, response):
 """Security mechanism response This method attempts to authenticate, passing a block of SASL data for the security mechanism at the server side. PARAMETERS: response: longstr security response data A block of opaque data passed to the security mechanism. The contents of this data are defined by the SASL security mechanism. """

        args = AMQPWriter()
        args.write_longstr(response)
        self._send_method((10, 21), args)