public E pollLast() {Map.Entry<E, Object> entry = backingMap.pollLastEntry();return (entry == null) ? null : entry.getKey();}

public E pollLast ( ) { Map . Entry < E , Object > entry = backingMap . pollLastEntry ( ) ; return ( entry == null ) ? null : entry . getKey ( ) ; }
public virtual E pollLast(){java.util.MapClass.Entry<E, object> entry = backingMap.pollLastEntry();return (entry == null) ? default(E) : entry.getKey();}
