// Copyright 2018 The Chromium Authors. All rights reserved.// Use of this source code is governed by a BSD-style license that can be// found in the LICENSE file./// This function can be used to call a const constructor in such a way as to/// create a new instance rather than creating the common const instance.////// ```dart/// class A {/// const A(this.i);/// int i;/// }////// main () {/// // prevent prefer_const_constructors lint/// new A(nonconst(null));////// // prevent prefer_const_declarations lint/// final int $null = nonconst(null);/// final A a = nonconst(const A(null));/// }/// ```