ranges/ranges.go
func (l *InclusiveRanges) Contains(value int) bool {
	for _, b := range l.blocks {
		if b.Contains(value) {
			return true
		}
	}
	return false
}
func (l *InclusiveRanges) Contains(value int) bool {
	for _, b := range l.blocks {
		if b.Contains(value) {
			return true
		}
	}
	return false
}
// Contains returns true if a given value is a valid
// value within the total range.