lib/src/utils_isolate_stub.dart - package_resolver - Git at Google

 // Copyright (c) 2019, 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.

 Future<Uri> resolvePackageUri(Uri packageUri) =>
     throw UnsupportedError('May not use a package URI');
	// Copyright (c) 2019, 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.

	Future<Uri> resolvePackageUri(Uri packageUri) =>
	throw UnsupportedError('May not use a package URI');