type unique.uniqueMap

3 uses

	unique (current package)
		handle.go#L41: 		m := &uniqueMap[T]{canonMap: newCanonMap[T](), cloneSeq: makeCloneSeq(typ)}
		handle.go#L44: 	m := ma.(*uniqueMap[T])
		handle.go#L66: type uniqueMap[T comparable] struct {