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An unofficial backport of the JDK Classfile API to Java 17

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/*
 * Copyright (c) 2022, 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,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
package io.github.dmlloyd.classfile.constantpool;

import io.github.dmlloyd.classfile.impl.AbstractPoolEntry;
import io.github.dmlloyd.classfile.extras.PreviewFeature;

/**
 * Models a member reference constant in the constant pool of a classfile,
 * which includes references to fields, methods, and interface methods.
 *
 * @sealedGraph
 * @since 22
 */
@PreviewFeature(feature = PreviewFeature.Feature.CLASSFILE_API)
public sealed interface MemberRefEntry extends PoolEntry
        permits FieldRefEntry, InterfaceMethodRefEntry, MethodRefEntry, AbstractPoolEntry.AbstractMemberRefEntry {
    /**
     * {@return the class in which this member ref lives}
     */
    ClassEntry owner();

    /**
     * {@return the name and type of the member}
     */
    NameAndTypeEntry nameAndType();

    /**
     * {@return the name of the member}
     */
    default Utf8Entry name() {
        return nameAndType().name();
    }

    /**
     * {@return the type of the member}
     */
    default Utf8Entry type() {
        return nameAndType().type();
    }
}