code: public void clear (int maximumCapacity) {
  		if (capacity <= maximumCapacity) {
  			clear();
  			return;
  		}
  		zeroValue = null;
  		hasZeroValue = false;
  		size = 0;
  		resize(maximumCapacity);
  	}
docs: Clears the map and reduces the size of the backing arrays to be the specified capacity if they are larger.