To be sure the doc is up to date:

1) Update libempathy.types
empathy/libempathy$ grep _get_type *.h | grep GType | awk '{ print $2 }'

2) Update libempathy-docs.sgml
empathy$ make
empathy/doc/libempathy$ for f in `ls -l xml/*.xml | awk '{ print $8 }'`; do echo "      <xi:include href=\"$f\"/>"; done