matchWithAngel function
Returns an AngelMatcher that applies an asynchronously-created Matcher to the input.
Use this to match values against configuration, injections, etc.
Implementation
AngelMatcher matchWithAngel(FutureOr<Matcher> Function(Object, Map, Angel) f,
[String description = 'satisfies asynchronously created matcher']) =>
_MatchWithAngel(f, description);