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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_instance(self, payload):
 """ Build an instance of HighriskSpecialPrefixInstance :param dict payload: Payload response from the API :returns: twilio.rest.voice.v1.dialing_permissions.country.highrisk_special_prefix.HighriskSpecialPrefixInstance :rtype: twilio.rest.voice.v1.dialing_permissions.country.highrisk_special_prefix.HighriskSpecialPrefixInstance """

        return HighriskSpecialPrefixInstance(self._version, payload, iso_code=self._solution['iso_code'], )