code: private void collectClassFiles(List<WorkItem> resources, Map<IPath, IPath> outLocations, Project fbProject) {
          for (WorkItem workItem : resources) {
              workItem.addFilesToProject(fbProject, outLocations);
          }
      }
docs: Updates given outputFiles map with class name patterns matching given
  java source names
  
  @param resources
  java sources
  @param outLocations
  key is src root, value is output location this directory
  @param fbProject