private List<StackTraceElementPlaceholder> stackTrace;
    private Throwable toStringRuntimeExec;
    private Throwable getMessageExec;

    public ExceptionPlaceholder(Throwable original, InternalTransformer<ExceptionReplacingObjectOutputStream, OutputStream> objectOutputStreamCreator, Set<Throwable> dejaVu) {
        boolean hasCycle = !dejaVu.add(original);
        Throwable throwable = original;
        type = throwable.getClass().getName();