 
The PySide.QtHelp.QHelpContentWidget class provides a tree view for displaying help content model items.
| Parameters: | link – PySide.QtCore.QUrl | 
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| Return type: | PySide.QtCore.QModelIndex | 
Returns the index of the content item with the link . An invalid index is returned if no such an item exists.
| Parameters: | link – PySide.QtCore.QUrl | 
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| Parameters: | 
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| Return type: | PySide.QtCore.bool | 
| Parameters: | index – PySide.QtCore.QModelIndex | 
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