def create_widget(self):
        self.widget = QCustomDockItem(self.parent_widget())
If the Event header is set, the payload is empty and the header passed.
dataset/ETHPy150Open ContinuumIO/ashiba/enaml/enaml/qt/qt_dock_item.py/QtDockItem.create_widget--crossover with--dataset/ETHPy150Open ralphm/idavoll/idavoll/test/test_gateway.py/CallbackResourceTest.test_postEvent