code: private void growLonePairArray() {
          growArraySize = (lonePairs.length < growArraySize) ? growArraySize : lonePairs.length;
          ILonePair[] newLonePairs = new ILonePair[lonePairs.length + growArraySize];
          System.arraycopy(lonePairs, 0, newLonePairs, 0, lonePairs.length);
          lonePairs = newLonePairs;
      }
docs: Grows the lone pair array by a given size.
  
  @see    #growArraySize