def init_widget(self):
        super(QtVTKCanvas, self).init_widget()
        self._refresh_renderers()
        self.vtk_widget.Initialize()

    #--------------------------------------------------------------------------
    # ProxyVTKCanvas API
    #--------------------------------------------------------------------------
Returns True if the argument is required.
dataset/ETHPy150Open nucleic/enaml/enaml/qt/qt_vtk_canvas.py/QtVTKCanvas.init_widget--crossover with--dataset/ETHPy150Open sdispater/cleo/cleo/inputs/input_argument.py/InputArgument.is_required