/*
 * Copyright 2003-2012 JetBrains s.r.o.
 *
 * 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 jetbrains.mps.util.containers;

import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;

public class SetBasedMultiMap<K, V> extends MultiMap<K, V> {
  @Override
  protected Collection<V> createCollection() {
    return new HashSet<V>();
  }

  @Override
  protected Collection<V> createEmptyCollection() {
    return Collections.emptySet();
  }
}
