private void fileDeleted(VirtualFile each) {
        DocumentReference ref = SoftReference.dereference(each.getUserData(FILE_TO_REF_KEY));
        each.putUserData(FILE_TO_REF_KEY, null);
        if (ref != null) {
          myDeletedFilePathToRef.put(new FilePath(each.getUrl()), ref);
        }
      }
private void fileDeleted(VirtualFile each)