@Override
        public int hashCode() {
            int result = priority;
            result = 31 * result + order;
            return result;
        }
A {@link ThreadFactory} that builds threads with priority
{@link android.os.Process#THREAD_PRIORITY_BACKGROUND}.
core/src/main/java/com/bumptech/glide/load/engine/executor/FifoPriorityThreadPoolExecutor.java