private static int computeHashCode(@NotNull Throwable throwable) {
    int mHash;
    String message = throwable.getMessage();
    if (message == null) {
      mHash = 0;
    }
    else {
      mHash = message.hashCode() * 37;
    }
    return mHash + computeTraceHashCode(throwable);
  }
private static int computeHashCode(@NotNull Throwable throwable)