Applies the list of registered functions to the global XLL Add-ins function list, causing them to be removed freom the global list, or left in place
static void Apply( CXllApp& app, bool removeUnpublished );
A reference to the global application instance.
If true, then an opt-in policy is implemented - all functions are removed from the list of published functions, except those specifically registered.
If false, then an opt-out policy is implemented - only registered functions are removed from the list of published functions.