[llvm-dev] Document TableGen classes with Doxygen?

[Paul C. Anagnostopoulos via llvm-dev]

Let's say I wanted to start writing a document on how to create a backend for TableGen. Such a document is suggested in "TableGen Backends." Should I describe the classes that are available to the backend in detail, or should I spend time updating the Doxygen comments in the class header files and simply present an overview in the document?