@Override
        protected void action() {
          swapProgress.setDebuggerSession(debuggerSession);
          Map<String, HotSwapFile> sessionClasses =
            getInstance(swapProgress.getProject()).scanForModifiedClasses(debuggerSession, outputPaths, swapProgress);
          if (!sessionClasses.isEmpty()) {
            modifiedClasses.put(debuggerSession, sessionClasses);
          }
        }
@Override
        protected void action()