tough one!  Although the document states:

   The packages are \B{not} supposed to show up in the
   implementations class names or name spaces, apart from
   the top level 'saga' name space.

language bindings might change that, at least for enums.  Enum names, however, are not unique at the moment (e.g. stream state vs. task state).

So I do not think that classes are a problem, but possibly enums, as they are, at the moment, all in the same name space.