anchor.diff:      show
           DynamicTypeBuilder,
           KernelClassBuilder,
  +        KernelFormalParameterBuilder,
  +        KernelFunctionTypeBuilder,
           KernelNamedTypeBuilder,
           KernelTypeBuilder,
           KernelTypeVariableBuilder,
  
positive.code:     return new KernelNamedTypeBuilder(cls.name, arguments)..bind(cls);
    }
  
    KernelTypeBuilder visitFunctionType(FunctionType node) {
      throw "Not implemented";
    }
  
    KernelTypeBuilder visitTypeParameterType(TypeParameterType node) {
  
negative.code:         VoidTypeBuilder;
  
  import '../loader.dart' show Loader;
  
  import '../parser.dart' show FormalParameterKind;
  
  class TypeBuilderComputer implements DartTypeVisitor<KernelTypeBuilder> {
    final Loader<Library> loader;
  