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This artifact provides efficient implementations for various collection data structures (esp. linked lists and priority queues), which have very insufficient implementation in the Java Collections Framework that makes it hard or even impossible to exploit their efficiencies.

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/* Copyright (C) 2013-2018 TU Dortmund
 * This file is part of AutomataLib, http://www.automatalib.net/.
 *
 * 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.
 */
package net.automatalib.commons.smartcollections;

/**
 * Exception that is thrown if an invalid {@link ElementReference} is used. This can be the case if it refers to a
 * previously removed element, or to an element stored in a different collection.
 * 
 * This exception does not need to be caught explicitly.
 *
 * @author Malte Isberner
 */
public class InvalidReferenceException extends IllegalArgumentException {

    private static final long serialVersionUID = 1L;

    /**
     * Default constructor.
     */
    public InvalidReferenceException() {
        super();
    }

    /**
     * Constructor.
     *
     * @see RuntimeException#RuntimeException(String)
     */
    public InvalidReferenceException(String message) {
        super(message);
    }
}