*<Null safety>*
int lowerBoundByCompare <K>(E element, K keyOf(E), int compare(K, K), [int start = 0, int? end])
int lowerBoundByCompare<K>( E element, K Function(E) keyOf, int Function(K, K) compare, [int start = 0, int? end]) => algorithms.lowerBoundBy(this, keyOf, compare, element, start, end);