private boolean shouldRevert(@NotNull Change c) {
    if (c.getId() == myFromChangeId) {
      isReverting = true;
    }
    boolean shouldRevert = isReverting && !(c instanceof ContentChange);
    if (shouldRevert && LOG.isDebugEnabled()) {
      LOG.debug("Reverting " + c);
    }
    return shouldRevert;
  }
private boolean shouldRevert(@NotNull Change c)