code: public Elements not(String query) {
          Elements out = Selector.select(query, this);
          return Selector.filterOut(this, out);
      }
docs: Remove elements from this list that match the {@link Selector} query.
  <p>
  E.g. HTML: {@code <div class=logo>One</div> <div>Two</div>}<br>
  <code>Elements divs = doc.select("div").not(".logo");</code><br>
  Result: {@code divs: [<div>Two</div>]}
  <p>
  @param query the selector query whose results should be removed from these elements
  @return a new elements list that contains only the filtered results