Hook to check whole object in matcher recipe?

[james-w]

How about a way to have a recipe with a check that is based on func(T) specta.MatchResult so that you can check multiple fields at the same time?

TODO.md mentions

// Multiple extractors at once
Fields[T any](extractors map[string]func(T) any) Matcher[T]

// Transform before matching
Transform[T, V any](name string, transform func(T) V, matcher Matcher[V]) Matcher[T]

// Predicate-based
Where[T any](description string, predicate func(T) bool) Matcher[T]

which seems to be along the same lines.