code: public TokenRequestBuilder getTokenEndPoint() {
      for(Authentication auth : getAuthentications().values()) {
        if (auth instanceof OAuth) {
          OAuth oauth = (OAuth) auth;
          return oauth.getTokenRequestBuilder();
        }
      }
      return null;
    }
docs: Helper method to configure the token endpoint of the first oauth found in the authentications (there should be only one)
  @return