android/guava/src/com/google/common/collect/Range.java
public static <C extends Comparable<?>> Range<C> lessThan(C endpoint) {
    return create(Cut.<C>belowAll(), Cut.belowValue(endpoint));
  }
public static <C extends Comparable<?>> Range<C> lessThan(C endpoint) {
    return create(Cut.<C>belowAll(), Cut.belowValue(endpoint));
  }
Returns a range that contains all values strictly less than {@code endpoint}.

@since 14.0