content: /*
   * Copyright (C) 2008 The Guava Authors
   *
   * 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 com.fernandocejas.frodo.core.collections;
  
  import java.util.Iterator;
  
  /**
   * An iterator that does not support {@link #remove}.
   *
   * @author Jared Levy
   * @since 2.0 (imported from Google Collections Library)
   *
   * <p><b>This class contains code derived from <a href="https://github.com/google/guava">Google
   * Guava</a></b>
   */
  public abstract class UnmodifiableIterator<E> implements Iterator<E> {
    /**
     * Constructor for use by subclasses.
     */
    protected UnmodifiableIterator() {
    }
  
    /**
     * Guaranteed to throw an exception and leave the underlying data unmodified.
     *
     * @throws UnsupportedOperationException always
     * @deprecated Unsupported operation.
     */
    @Override
    public final void remove() {
      throw new UnsupportedOperationException();
    }
  }
  