fixed memory leak in NotFoundHandler
src cleanup
cleanUp the right way, don't use JavaConversions, make cleanUps invocation the responsibility of the completer
apply cleanUp in complete, constantize fallback partial function
apply cleanUp in completion, constantize fallback partial function
some of these vals can be constantized
some of these request aliases are unused
remove more unused request aliases
explicit return type for abstract method
move abstract members to top of Plan def