}

    public void setFailureBehavior(String failureBehavior) {
        if (failureBehavior == null) {
            this.failureBehavior = FAIL_FAST; // default
            return;
        }
        if (FAIL_FAST.equals(failureBehavior)
                || FAIL_AT_END.equals(failureBehavior)
                || FAIL_NEVER.equals(failureBehavior)) {
            this.failureBehavior = failureBehavior;