/*
* {@inheritDoc}
*
* @see java.util.NavigableSet#pollFirst()
* @since 1.6
*/
public E pollFirst()
{
MapNS.Entry <E, Object> entry = backingMap.pollFirstEntry();
return((null == entry) ? default(E) : entry.getKey());
}
/*
* {@inheritDoc}
*
* @see java.util.NavigableSet#pollFirst()
* @since 1.6
*/
public E pollFirst()
{
MapNS.Entry <E, Object> entry = backingMap.pollFirstEntry();
return((null == entry) ? default(E) : entry.getKey());
}