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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 answerUnsupported(self, message, preferred_association_type=None, preferred_session_type=None):
 """Respond to this request indicating that the association type or association session type is not supported."""

        if self.message.isOpenID1():
            raise ProtocolError(self.message)

        response = OpenIDResponse(self)
        response.fields.setArg(OPENID_NS, 'error_code', 'unsupported-type')
        response.fields.setArg(OPENID_NS, 'error', message)

        if preferred_association_type:
            response.fields.setArg(
                OPENID_NS, 'assoc_type', preferred_association_type)

        if preferred_session_type:
            response.fields.setArg(
                OPENID_NS, 'session_type', preferred_session_type)

        return response