const github.com/google/go-cmp/cmp/internal/function.KeyValuePredicate

2 uses

	github.com/google/go-cmp/cmp/internal/function (current package)
		func.go#L32: 	KeyValuePredicate = trbFunc // func(T, R) bool

	github.com/google/go-cmp/cmp/cmpopts
		ignore.go#L185: 	if !function.IsType(vf.Type(), function.KeyValuePredicate) || vf.IsNil() {