Base:
method
ComputeDeclarationsInSpan
Microsoft.CodeAnalysis.Diagnostics.AbstractAnalyzerDriverService.ComputeDeclarationsInSpan(Microsoft.CodeAnalysis.SemanticModel, Microsoft.CodeAnalysis.Text.TextSpan, Microsoft.CodeAnalysis.PooledObjects.ArrayBuilder<Microsoft.CodeAnalysis.DeclarationInfo>, System.Threading.CancellationToken)