Apply caching to the parsed Page TSconfig. This is done in the other similar functions for both frontend and backend. However, since this functions works for BOTH frontend and backend we will have to either write our own local caching function or (more likely) detect if we are in FE or BE and use caching functions accordingly. Not having caching affects mostly the backend modules inside the "Template" module since the overhead in the frontend is only seen when TypoScript templates are parsed anyways (after which point they are cached anyways...)
Need to really extend this class when the tcemain library has been updated and the whole API is better defined. There are some known bugs in this library. Further it would be nice with a facility to not only analyze but also clean up!