docs: public void pairsMatching(final LongIntProcedure condition, final LongArrayList keyList, final IntArrayList valueList) {
  	keyList.clear();
  	valueList.clear();
  	
  	forEachPair(
  		new LongIntProcedure() {
  			public boolean apply(long key, int value) {
  				if (condition.apply(key,value)) {
  					keyList.add(key);
  					valueList.add(value);
  				}
  				return true;
  			}
  		}
  	);
  }