underlying
AbstractMapWrapper AbstractSetWrapper CollectionWrapper ComparableWrapper ComparatorWrapper DictionaryWrapper EnumerationWrapper IterableWrapper IteratorWrapper ListWrapper MapWrapper MutableListWrapper MutableMapWrapper MutableSetWrapper SetWrapper BufferWrapper IterableWrapper IteratorWrapper LinearSeqWrapper MapWrapper MutableIteratorWrapper MutableMapDictionaryWrapper MutableMapWrapper MutableSeqWrapper MutableSetWrapper SeqWrapper SetWrapper