return false;
}
int oldSize = this.size();
if (source instanceof LongBag)
{
LongBag otherBag = (LongBag) source;
otherBag.forEachWithOccurrences(new LongIntProcedure()
{
public void value(long each, int occurrences)
{
int oldOccurrences = LongHashBag.this.items.removeKeyIfAbsent(each, 0);
LongHashBag.this.size -= oldOccurrences;