See super class method satosa.frontends.base.FrontendModule#handle_authn_response
        :type context: satosa.context.Context
        :type internal_response: satosa.internal.InternalData
        :rtype satosa.response.Response

def handle_authn_response(self, context, internal_response):
        """
        See super class method satosa.frontends.base.FrontendModule#handle_authn_response
        :type context: satosa.context.Context
        :type internal_response: satosa.internal.InternalData
        :rtype satosa.response.Response
        """
        return self._handle_authn_response(context, internal_response, self.idp)