public static <T> T produceLevelAware(int level, Producer<T> after, Producer<T> before) {
T result = null;
if (Build.VERSION.SDK_INT >= level) {
if (null != after) result = after.produce();
} else {
if (null != before) result = before.produce();
}
return result;
}
public int reduce(int base, IntBinaryOperator reducerOp) {
IntTransformer.ReducerTail reducer = new IntTransformer.ReducerTail(reducerOp, base);
Producer producer = producer(reducer);
while (producer.produce()) {}
return reducer.getResult();
}