gistfile1.scala

class Monitored extends SomeClass with JmxManaged {
  val currentThings = new AtomicLong
  val totalThings = new AtomicLong

  enableJMX() { jmx =>
    jmx.addAttribute("total-things") { totalThings.get }
    jmx.addAttribute("current-things") { currentThings.get }
  }

  // ...
}