Called when the client is listening, and somebody changes the image of a thread

        :param mid: The action ID
        :param author_id: The ID of the person who changed the image
        :param new_image: The ID of the new image
        :param thread_id: Thread ID that the action was sent to. See :ref:`intro_threads`
        :param thread_type: Type of thread that the action was sent to. See :ref:`intro_threads`
        :param ts: A timestamp of the action
        :param msg: A full set of the data recieved
        :type thread_type: models.ThreadType

def onImageChange(
        self,
        mid=None,
        author_id=None,
        new_image=None,
        thread_id=None,
        thread_type=ThreadType.GROUP,
        ts=None,
        msg=None,
    ):
        """
        Called when the client is listening, and somebody changes the image of a thread

        :param mid: The action ID
        :param author_id: The ID of the person who changed the image
        :param new_image: The ID of the new image
        :param thread_id: Thread ID that the action was sent to. See :ref:`intro_threads`
        :param thread_type: Type of thread that the action was sent to. See :ref:`intro_threads`
        :param ts: A timestamp of the action
        :param msg: A full set of the data recieved
        :type thread_type: models.ThreadType
        """
        log.info("{} changed thread image in {}".format(author_id, thread_id))