Ugh.  Can we do something to improve the name of setWorkingTreeIt?  Maybe call it setWorkingTreeIterator?

I don't know if you have heard, but there is this fancy editor for Java called Eclipse.  You can use Ctrl-Space to ask it to complete aLengthyMethodNameThatIsTooLongToTypeButIsVeryDescriptiveOfItsPurpose, which means using abbreviations isn't necessary.  :-)