Woohoo! Finally, everything passes!
http://gwt-code-reviews.appspot.com/1601806/diff/35001/user/src/com/google/web/bindery/requestfactory/shared/impl/AbstractRequestContext.java File user/src/com/google/web/bindery/requestfactory/shared/impl/AbstractRequestContext.java (right): http://gwt-code-reviews.appspot.com/1601806/diff/35001/user/src/com/google/web/bindery/requestfactory/shared/impl/AbstractRequestContext.java#newcode668 user/src/com/google/web/bindery/requestfactory/shared/impl/AbstractRequestContext.java:668: public boolean isDiffing() { javadoc http://gwt-code-reviews.appspot.com/1601806/ -- http://groups.google.com/group/Google-Web-Toolkit-Contributors