Method indexOf

immutable.go:1759–1759

(key K, c Comparer[K])

type sortedMapNode[K, V any] interface {
	minKey() K
	indexOf(key K, c Comparer[K]) int
	get(key K, c Comparer[K]) (value V, ok bool)
	set(key K, value V, c Comparer[K], mutable bool, resized *bool) (sortedMapNode[K, V], sortedMapNode[K, V])
	delete(key K, c Comparer[K], mutable bool, resized *bool) sortedMapNode[K, V]