public void setPriority(int priority) {
        if (priority < 0 || priority > 99) {
            throw new IllegalArgumentException("priority MUST be between 0 and 99 (inclusive)");
        }
        this.priority = priority;
    }
@param priority priority of tasks (between 0 and 99)
common/src/main/java/com/netflix/conductor/common/run/Workflow.java