Base:
method
BuildExtensionMethodsMap
Microsoft.CodeAnalysis.VisualBasic.Microsoft.CodeAnalysis.VisualBasic.Symbols.NamedTypeSymbol.BuildExtensionMethodsMap(System.Collections.Generic.Dictionary(Of System.String, ArrayBuilder), Microsoft.CodeAnalysis.VisualBasic.Microsoft.CodeAnalysis.VisualBasic.Symbols.NamespaceSymbol)