Fetch feedback messages in a stack

        :param stackid: Id of the stack
        :param offset: the pagination offset
        :param limit: the pagination limit

def get_feedback_in_stack(self, stackid, offset=0, limit=10):

        """Fetch feedback messages in a stack

        :param stackid: Id of the stack
        :param offset: the pagination offset
        :param limit: the pagination limit
        """

        if self.standard_grant_type is not "authorization_code":
            raise DeviantartError("Authentication through Authorization Code (Grant Type) is required in order to connect to this endpoint.")

        response = self._req('/messages/feedback/{}'.format(stackid), {
            'offset' : offset,
            'limit' : limit
        })

        messages = []

        for item in response['results']:

            m = Message()
            m.from_dict(item)

            messages.append(m)

        return {
            "results" : messages,
            "has_more" : response['has_more'],
            "next_offset" : response['next_offset']
        }