code: public ExtWebDriver getNewSession(boolean setAsCurrent) throws Exception {
          Map<String, String> options = sessionFactory.get().createDefaultOptions();
          return getNewSessionDo(options, setAsCurrent);
      }
docs: Create and return new ExtWebDriver instance with default options. If
  setAsCurrent is true, set the new session as the current session for this
  SessionManager.
  
  @param setAsCurrent
  set to true if the new session should become the current
  session for this SessionManager
  @return A new ExtWebDriver session
  @throws Exception