case *types.Pointer:
		buf.WriteByte('*')
		w.writeType(buf, typ.Elem())

	case *types.Tuple:
		panic("should never see a tuple type")

	case *types.Signature:
		buf.WriteString("func")
		w.writeSignature(buf, typ)

	case *types.Interface:
		buf.WriteString("interface{")
		if typ.NumMethods() > 0 || typ.NumEmbeddeds() > 0 {
			buf.WriteByte(' ')
		}
		if typ.NumMethods() > 0 {

pkg go/types, func SelectionString(*Selection, Qualifier) string
pkg go/types, func TypeString(Type, Qualifier) string
pkg go/types, func WriteExpr(*bytes.Buffer, ast.Expr)
pkg go/types, func WriteSignature(*bytes.Buffer, *Signature, Qualifier)
pkg go/types, func WriteType(*bytes.Buffer, Type, Qualifier)
pkg go/types, method (*Array) Elem() Type
pkg go/types, method (*Array) Len() int64