pkg/front_end/testcases/extension_types/inline_class_declaration.dart - sdk - Git at Google

 // Copyright (c) 2023, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.

 mixin Mixin {}
 extension type Class1(int it) {}
 extension type Class3<T>(List<T> it) {}

 method(Class1 c1, Class3<int> c3) {}
	// Copyright (c) 2023, the Dart project authors. Please see the AUTHORS file
	// for details. All rights reserved. Use of this source code is governed by a
	// BSD-style license that can be found in the LICENSE file.

	mixin Mixin {}
	extension type Class1(int it) {}
	extension type Class3<T>(List<T> it) {}

	method(Class1 c1, Class3<int> c3) {}