Base:
method
GetExpressionSymbolInfo
Microsoft.CodeAnalysis.VisualBasic.Microsoft.CodeAnalysis.VisualBasic.SyntaxTreeSemanticModel.GetExpressionSymbolInfo(ExpressionSyntax, Microsoft.CodeAnalysis.VisualBasic.Microsoft.CodeAnalysis.VisualBasic.VBSemanticModel.SymbolInfoOptions, System.Threading.CancellationToken)