PySide6.QtDesigner.QPyDesignerContainerExtension
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.. 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 :class:`~PySide6.QtCore.QObject`.

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