code: public static <T extends WebElement> T findElement(By by, SearchContext context) {
          WebElement element = null;
          List<WebElement> elements = context.findElements(by);
          if (elements.size() == 1) {
              element = elements.get(0);
          } else if (elements.size() > 1) {
              element = BEST_FUNCTION.apply(context, elements);
          }
          return (T) element;
      }
docs: Returns 'best' result from by.
  If there is no result: returns null,
  if there is just one that is best,
  otherwise the 'bestFunction' is applied to all results to determine best.
  @param by by to use to find elements.
  @param context context to search in.
  @param <T> type of element expected.
  @return 'best' element, will be <code>null</code> if no elements were found.