What is the recommended way, to allow only scriptable methods (annotated with Q_SCRIPTABLE) and scriptable properties (SCRIPTABLE attribute of a Q_PROPERTY)?

Should I filter the data when doing introspection (PythonQt::introspection) to prevent the user from selecting any other methods and properties or is it possible to filter out methods and properties when a QObject becomes visible / registered to the Python interpreter. What is the right place in the source code to touch if i would like to enable only scriptable methods and properties?