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/*
 * Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you
 * may not use this file except in compliance with the License. You
 * may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * permissions and limitations under the License. See accompanying
 * LICENSE file.
 */

package com.gemstone.gemfire.lang;

import java.io.Serializable;

/**
 * The Identifiable interface defines a contract for classes whose Object instances can be uniquely identified relative
 * to other Object instances within the same class type hierarchy.
 * 
 * @author John Blum
 * @param  the class type of the identifier.
 * @see java.lang.Comparable
 * @since 7.0
 */
public interface Identifiable> extends Serializable {

  /**
   * Gets the identifier uniquely identifying this Object instance.
   * 
   * @return an identifier uniquely identifying this Object.
   */
  public T getId();

}