return startProcess(sessionId, cmdList, pbCall, InputStreamThread.MAX_BUFFER_SIZE, null);
    }

    public synchronized JobProcess startProcess(final String sessionId, final List<String> cmdList, final Consumer<ProcessBuilder> pbCall,
            final int bufferSize, final Consumer<String> outputCallback) {
        final ProcessBuilder pb = new ProcessBuilder(cmdList);

            }
            if ("$PASSWORD".equals(s)) {
                return password;
            }
            return s;
        }).toArray(n -> new String[n]));
        final ProcessBuilder pb = new ProcessBuilder(cmds);
        if (workingDirectory != null) {
            pb.directory(workingDirectory);
        }
        pb.redirectErrorStream(true);

        Process currentProcess = null;

        });

    }

    protected void executeCommand(final String thumbnailId, final List<String> cmdList) {
        ProcessDestroyer task = null;
        try {
            final ProcessBuilder pb = new ProcessBuilder(cmdList);
            pb.directory(baseDir);
            pb.redirectErrorStream(true);

            if (logger.isDebugEnabled()) {
                logger.debug("Thumbnail Command: {}", cmdList);