ratpack/ratpack — pull request #477 by tomdcc (2014-10-30 06:09:56+00:00)
Title: Build Pac4JCallbackHandler with a builder

Take 2, now with more builders.

Bikeshedding:
- I left the default functions in the handler itself rather than putting them in the builder or separate classes.
- There's still a no-arg constructor to get the current behaviour.