def create_widget(self):
        self.widget = wx.ComboBox(self.parent_widget(), style=wx.CB_READONLY)
A dictionary of node objects to lists of content classes they would allow::
dataset/ETHPy150Open ContinuumIO/ashiba/enaml/enaml/wx/wx_combo_box.py/WxComboBox.create_widget--crossover with--dataset/ETHPy150Open fusionbox/django-widgy/widgy/models/base.py/Node.filter_child_classes_recursive