WorkerThread is a JPowerThread type https://gist.github.com/kaendfinger/5756602

WorkerThread.groovy

package jpower.thread

class WorkerThread implements Runnable {
    def closure

    WorkerThread(Closure closure) {
        this.closure = closure
    }

    def execute() {
        def thread = new Thread(this)
        thread.start()
        return thread
    }

    def void run() {
        closure.run()
    }
}