code: public void remove( Element<T> element ) {
  		if( element.next == null ) {
  			last = element.previous;
  		} else {
  			element.next.previous = element.previous;
  		}
  		if( element.previous == null ) {
  			first = element.next;
  		} else {
  			element.previous.next = element.next;
  		}
  		size--;
  		element.clear();
  		available.push(element);
  	}
docs: Removes the element from the list and saves the element data structure for later reuse.
  @param element The item which is to be removed from the list