if (this.execHandleRef.getAndSet(execHandle) != null) {
            throw new IllegalStateException("you have already called start() on this handle");
        }

        checkDistributionExists();
        printExecHandleSettings();

        execHandle.start();
        if (durationMeasurement != null) {
            durationMeasurement.start();
        }
        return this;
    }

    private void checkDistributionExists() {