How to use the hdijupyterutils.ipywidgetfactory.IpyWidgetFactory function in hdijupyterutils

def __init__(self, df, encoding, change_hook, ipywidget_factory=None, testing=False, **kwargs):
        assert encoding is not None
        assert df is not None
        assert type(df) is pd.DataFrame

        kwargs['orientation'] = 'vertical'
        if not testing:
            super(EncodingWidget, self).__init__((), **kwargs)

        if ipywidget_factory is None:
            ipywidget_factory = IpyWidgetFactory()
        self.ipywidget_factory = ipywidget_factory

        self.df = df
        self.encoding = encoding
        self.change_hook = change_hook

        self.widget = self.ipywidget_factory.get_vbox()

        self.title = self.ipywidget_factory.get_html('Encoding:', width='148px', height='32px')

        # X view
        options_x_view = {text(i): text(i) for i in self.df.columns}
        options_x_view["-"] = None
        self.x_view = self.ipywidget_factory.get_dropdown(options=options_x_view,
                                                          description="X", value=self.encoding.x)
        self.x_view.on_trait_change(self._x_changed_callback, 'value')

def __init__(self, spark_controller, ipywidget_factory=None, ipython_display=None,
                 nested_widget_mode=False, testing=False, **kwargs):
        kwargs['orientation'] = 'vertical'

        if not testing:
            super(AbstractMenuWidget, self).__init__((), **kwargs)

        self.spark_controller = spark_controller

        if ipywidget_factory is None:
            ipywidget_factory = IpyWidgetFactory()
        self.ipywidget_factory = ipywidget_factory

        if ipython_display is None:
            ipython_display = IpythonDisplay()
        self.ipython_display = ipython_display

        self.children = []

        if not nested_widget_mode:
            self._repr_html_()

assert df is not None
        assert type(df) is pd.DataFrame

        kwargs['orientation'] = 'vertical'

        if not testing:
            super(AutoVizWidget, self).__init__((), **kwargs)

        self.df = self._convert_to_displayable_dataframe(df)

        if renderer is None:
            renderer = GraphRenderer()
        self.renderer = renderer

        if ipywidget_factory is None:
            ipywidget_factory = IpyWidgetFactory()
        self.ipywidget_factory = ipywidget_factory

        if encoding_widget is None:
            encoding_widget = EncodingWidget(self.df, encoding, self.on_render_viz)
        self.encoding_widget = encoding_widget

        if ipython_display is None:
            ipython_display = IpythonDisplay()
        self.ipython_display = ipython_display

        self.encoding = encoding

        # Widget that will become the only child of AutoVizWidget
        self.widget = self.ipywidget_factory.get_vbox()

        # Create output area