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A Java Optimization Framework

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package soot.util;

/*-
 * #%L
 * Soot - a J*va Optimization Framework
 * %%
 * Copyright (C) 2002 Ondrej Lhotak
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 2.1 of the
 * License, or (at your option) any later version.
 * 
 * This program 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 Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * .
 * #L%
 */

import heros.solver.Pair;

import java.util.Collection;
import java.util.Map;
import java.util.Set;

/**
 * A map with sets as values.
 *
 * @author Ondrej Lhotak
 */
public interface MultiMap extends Iterable> {
  public boolean isEmpty();

  public int numKeys();

  public boolean contains(K key, V value);

  public boolean containsKey(K key);

  public boolean containsValue(V value);

  public boolean put(K key, V value);

  public boolean putAll(K key, Collection values);

  public boolean putAll(Map> m);

  public boolean putMap(Map m);

  public boolean putAll(MultiMap m);

  public boolean remove(K key, V value);

  public boolean remove(K key);

  public boolean removeAll(K key, Collection values);

  public Set get(K o);

  public Set keySet();

  public Set values();

  /**
   * Gets the number of keys in this MultiMap
   * 
   * @return The number of keys in this MultiMap
   */
  public int size();

  public void clear();
}