docs: public synchronized void removeLeastUsedElements()
      {    
          int rows = this.removePercent / 100 *  this.length;
          rows     = rows == 0 ? 1 : rows;
          
          while(rows > 0 && this.length > 0) {
              // remove the last element
              Entry<E, T> entry = this.tail.prev;
              
              this.tail.prev = entry.prev;
              entry.prev.next = this.tail;
              map.remove(entry.key);
              this.length--;
              rows--;
          }
      }