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package org.broadinstitute.hellbender.utils.collections;

import java.util.Collection;
import java.util.Map;
import java.util.function.Function;

/**
 * A map that can contain multiple values for a given key.
 */
public class HopscotchMultiMap>  extends HopscotchCollection {
    public HopscotchMultiMap() {}
    public HopscotchMultiMap( final int capacity ) { super(capacity); }
    public HopscotchMultiMap( final Collection collection ) { super(collection); }

    /**
     * getKey returns the key part of a Map.Entry
     */
    @Override
    protected Function toKey() { return T::getKey; }
}