this.stdinPipe = stdInPipe;
        return this;
    }

    public InputStream connectStdIn() {
        try {
            return stdinPipe == null ? SafeStreams.emptyInput() : new PipedInputStream(stdinPipe);
        } catch (IOException e) {
            throw UncheckedException.throwAsUncheckedException(e);
        }
    }

    public PipedOutputStream getStdinPipe() {