.. currentmodule:: PySide6.QtDesigner
.. py:class:: QPyDesignerContainerExtension

QPyDesignerContainerExtension is the base class for implementing
`QDesignerContainerExtension class`_
for a *Qt Widgets Designer* custom widget plugin in Python.
It provides the required inheritance from **QObject**.

.. _QDesignerContainerExtension class: https://doc.qt.io/qt-6/qdesignercontainerextension.html
