_render () {

        this._updateSource();

        super._render();

        this._updateIframe();

        this._updateStyles();

    }
/**
     * Called when things might have been changed.
     *
     * @protected
     */
Called when things might have been changed.
@protected
Called when things might have been changed . @protected
_render () {
        this._updateSource();
        super._render();
        this._updateIframe();
        this._updateStyles();
    }
_render ( ) { this . _updateSource ( ) ; super . _render ( ) ; this . _updateIframe ( ) ; this . _updateStyles ( ) ; }
Called when things might have been changed.
Called when things might have been changed .