interface MapExtra<K, V> : ConcurrentMap<K, V>Extra methods for Map interface
| keySerializer | 
abstract val keySerializer: Serializer<K> | 
| valueSerializer | 
abstract val valueSerializer: Serializer<V> | 
| forEach | 
abstract fun forEach(action: BiConsumer<in K, in V>): Unit | 
| forEachKey | 
abstract fun forEachKey(procedure: (K) -> Unit): Unit | 
| forEachValue | 
abstract fun forEachValue(procedure: (V) -> Unit): Unit | 
| isClosed | 
abstract fun isClosed(): Boolean | 
| putIfAbsentBoolean | 
abstract fun putIfAbsentBoolean(key: K?, value: V?): BooleanAtomically associates the specified key with the given value if it is not already associated with a value.  | 
| sizeLong | 
abstract fun sizeLong(): Longmap size as long number  | 
| ConcurrentNavigableMapExtra | 
interface ConcurrentNavigableMapExtra<K, V> : ConcurrentNavigableMap<K, V>, MapExtra<K, V>, ConcurrentNavigableMap2<K, V> | 
| HTreeMap | 
class HTreeMap<K, V> : ConcurrentMap<K, V>, ConcurrencyAware, MapExtra<K, V>, Verifiable, CloseableConcurrent HashMap which uses IndexTree for hash table  |