Class Hierarchy
- java.lang.Object
- jetbrains.mps.util.containers.BidirectionalMap<K,V> (implements java.util.Map<K,V>)
 - jetbrains.mps.util.containers.ConcurrentHashSet<K> (implements java.util.Set<E>)
 - jetbrains.mps.util.containers.EmptyIterable<T> (implements java.lang.Iterable<T>)
 - jetbrains.mps.util.containers.EmptyIterator<T> (implements java.util.Iterator<E>)
 - jetbrains.mps.util.containers.ManyToManyMap<F,S>
 - jetbrains.mps.util.containers.MultiMap<K,V> (implements java.io.Serializable)
- jetbrains.mps.util.containers.SetBasedMultiMap<K,V>