docs: @SuppressWarnings("WeakerAccess")
    protected boolean isJettyWithJMX(ClassLoaderLeakPreventor preventor) {
      final ClassLoader classLoader = preventor.getClassLoader();
      try {
        // If package org.eclipse.jetty is found, we may be running under jetty
        if (classLoader.getResource("org/eclipse/jetty") == null) {
          return false;
        }
  
        Class.forName("org.eclipse.jetty.jmx.MBeanContainer", false, classLoader.getParent()); // JMX enabled?
        Class.forName("org.eclipse.jetty.webapp.WebAppContext", false, classLoader.getParent());
      }
      catch(Exception ex) { // For example ClassNotFoundException
        return false;
      }
      
      // Seems we are running in Jetty with JMX enabled
      return true;
    }