, });              var builder = CreateDfaMatcherBuilder();              // Act             var candidate = builder.CreateCandidate(endpoint, score: 0);              // Assert             Assert.Equal(                 Candidate.CandidateFlags.HasDefaults | Candidate.CandidateFlags.HasCaptures,                 candidate.Flags);             Assert.Collection(                 candidate.Slots,                 s => Assert.Equal(new KeyValuePair<string, object>("a", "aa"), s),                 s => Assert.Equal(new KeyValuePair<string, object>("