/guava/android/guava/src/com/google/common/collect/ContiguousSet.java
empty = Range.compareOrThrow( afterLower) > 0;
empty = Range.compareOrThrow ( afterLower, beforeUpper ) > 0;
boolean empty; if (effectiveRange.isEmpty()) { empty = true; } else { C afterLower = requireNonNull(range.lowerBound.leastValueAbove(domain)); C beforeUpper = requireNonNull(range.upperBound.greatestValueBelow(domain)); <extra_id_0> } return empty ? new EmptyContiguousSet<C>(domain) : new RegularContiguousSet<C>(effectiveRange, domain); } public static ContiguousSet<Integer> closed(int lower, int upper) {