Qt 5 to-do's in QGraphicsProxyWidget

/*!
    \internal

    Reimplemented from QGraphicsItemPrivate. ### Qt 5: Move impl to
    reimplementation QGraphicsProxyWidget::inputMethodQuery().
*/
QVariant QGraphicsProxyWidgetPrivate::inputMethodQueryHelper(Qt::InputMethodQuery query) const
...
    case QEvent::InputMethod: {
        // Forward input method events if the focus widget enables
        // input methods.
        // ### Qt 4.5: this code must also go into a reimplementation
        // of inputMethodEvent().
        QWidget *focusWidget = d->widget->focusWidget();
        if (focusWidget && focusWidget->testAttribute(Qt::WA_InputMethodEnabled))
            QApplication::sendEvent(focusWidget, event);
        break;
    }

    // ### Qt 4.5:
    // QVariant inputMethodQuery(Qt::InputMethodQuery query) const;
    // void inputMethodEvent(QInputMethodEvent *event);

    // ### Qt 5: Remove. Workaround for reimplementation added after Qt 4.4.
    QVariant inputMethodQueryHelper(Qt::InputMethodQuery query) const;