Base:
method
GetCollectionInitializerAddSymbolInfo
Microsoft.CodeAnalysis.VisualBasic.VBSemanticModel.GetCollectionInitializerAddSymbolInfo(Microsoft.CodeAnalysis.VisualBasic.Syntax.ObjectCreationExpressionSyntax, Microsoft.CodeAnalysis.VisualBasic.Syntax.ExpressionSyntax, System.Threading.CancellationToken)