code: private void handleLongOption(String token) throws OptionParserException {
          if (token.indexOf('=') == -1) {
              handleLongOptionWithoutEqual(token);
          } else {
              handleLongOptionWithEqual(token);
          }
      }
docs: Handles the following tokens:
  <pre>
  --L
  --L=V
  --L V
  --l
  </pre>
  
  @param token the command line token to handle
  @throws OptionParserException if option parsing fails