Base:
method
GetForwardedToAssemblyInUsingNamespaces
Microsoft.CodeAnalysis.CSharp.Binder.GetForwardedToAssemblyInUsingNamespaces(System.String, ref Microsoft.CodeAnalysis.CSharp.Symbols.NamespaceOrTypeSymbol, Microsoft.CodeAnalysis.CSharp.BindingDiagnosticBag, Microsoft.CodeAnalysis.Location)