def invalidate(self):
        super(QDockFrameLayout, self).invalidate()
        self._size_hint = QSize()
        self._min_size = QSize()
        self._max_size = QSize()
Get AMQP Message attribute: content_type.
dataset/ETHPy150Open ContinuumIO/ashiba/enaml/enaml/qt/docking/q_dock_frame_layout.py/QDockFrameLayout.invalidate--crossover with--dataset/ETHPy150Open eandersson/amqpstorm/amqpstorm/message.py/Message.content_type