public ImmutableLongLongMap newWithKeyValue(long key, long value)
{
MutableLongLongMap map = new LongLongHashMap(this.size() + 1);
map.putAll(this);
map.put(key, value);
return map.toImmutable();
}
public ImmutableLongLongMap newWithoutKey(long key)
{
MutableLongLongMap map = new LongLongHashMap(this.size());