/*
 * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
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 *
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package java.lang;

/**
 * A restricted interface implemented by all identity objects.
 * @since Valhalla
*/
public interface IdentityObject {
    /**
     * Returns a new Object implementing the {@code IdentityObject} interface.
     * The object is a unique {@link IdentityObject} suitable for all purposes
     * for which {@code new Object{}} was used including synchronization,
     * mutexes and unique placeholders.
     *
     * @return a new Object implementing the IdentityObject interface
     * @since Valhalla
     */
    static IdentityObject newIdentity() {
        // Return a new instance of an anonymous inner class.
        return new IdentityObject() { };
    }
}