Ahh. That would be why. The 1.1 branch is no longer under active development (because it is really quite nasty to work with JSF 1.1), and has its own (old) version of the docs (if you look carefully at the docs links on the prettyfaces homepage.) We should make this clearer, sorry for the inconvenience:
However, as you have found out, the 1.1 branch builds with the 1.2 and 2.0 branches, so if you would like to implement this feature, we would be more than happy to review and merge in your patch for the next release.
Even better, if you’d like to try to upgrade the 1.1 branch to use the new ‘core’ module architecture that the 1.2 and 2.0 branches use, that would help solve this problem in the future. (Warning, I think that would be VERY difficult… 1.1 has many many differences.)