HDAViewerHandleModule is similar to hou.HDAViewerStateModule but dedicated for python viewer
handles. It is mainly used to access the python viewer handle module that is associated with a
particular digital asset type. You don’t normally need
HDAViewerHandleModule for using python
handles though, this object is typically used by Houdini for registering the python handles embedded
in the digital asset.
The python handle state module’s source code is stored in the ViewerHandle Module section of the Interactive|Handle Script tab in the Type Properties dialog. The source code can be edited with the Handle script editor.