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UserMessageError
===================================================================

.. currentmodule:: gi.repository.WebKitWebProcessExtension


.. versionadded:: 2.28




.. class:: UserMessageError
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Enum values used to denote errors happening when sending user messages.












Fields
------

.. rst-class:: interim-class

.. class:: UserMessageError
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   .. attribute:: USER_MESSAGE_UNHANDLED_MESSAGE

      The type of the None singleton.