Microsoft.CodeAnalysis.Classification.IClassificationService.AddSyntacticClassifications(Microsoft.CodeAnalysis.Host.SolutionServices, Microsoft.CodeAnalysis.SyntaxNode, System.Collections.Immutable.ImmutableArray<Microsoft.CodeAnalysis.Text.TextSpan>, Microsoft.CodeAnalysis.Collections.SegmentedList<Microsoft.CodeAnalysis.Classification.ClassifiedSpan>, System.Threading.CancellationToken)