Wrong type of author in the code example of grouped properties

I think there is a small mistake in the code example of grouped properties:

http://doc.qt.io/qt-5/qtqml-cppintegration-exposecppattributes.html#grouped-properties

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Message *author() const

{ return m_author; }
private:
Message *m_author;
};
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As written in the comment above this example the author property should be as type MessageAuthor ... so it should be:

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MessageAuthor *author() const { return m_author; }

private:
MessageAuthor *m_author;
};
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