private void onRunCompleted(String originalName) {
        this.closeConnection();
        this.endMessageHandler();
        baseSmtpServerRunnable.sessionEnded(this);
        Thread.currentThread().setName(originalName);
        MDC.clear();
    }
The thread for each session runs on this and shuts down when the quitting
member goes true.
src/main/java/de/gessnerfl/fakesmtp/smtp/server/Session.java