code: public void remove(HistoryReference href) {
  		synchronized (hrefList) {
  			int index = hrefList.indexOf(href);
  			if (index >= 0) {
  				hrefList.remove(index);
  				fireTableRowsDeleted(index, index);
  			}
  		}
  	}
docs: Removes the scan result for a particular uri and method. Method is synchronized internally.
  
  @param href the history reference