I just started playing around with cedet and semantic (and elisp) in general, and the erlang parser in particular and I just can't seem to wrap my head around how to increase the depth of the parsing. Calling semantic-fetch-tags on the following module:

bar(ping) -> pong;
bar(Hej)  -> pang.

Yields the following:
((foo package nil nil #<overlay from 1 to 14 in foo.erl>) (bar/1 function (:arguments ((ping))) nil #<overlay from 16 to 53 in foo.erl>))

How do I go about extractiing information about the tags inside the bar-function?