code: private String storeCookies(Map<String, String> signedCookies,
                                  String streamingHost,
                                  String redirectUrl) {
          SignedCookieData signedCookieData = new SignedCookieData();
          signedCookieData.setSignedCookies(signedCookies);
          signedCookieData.setStreamingHost(streamingHost);
          signedCookieData.setRedirectUrl(redirectUrl);
  
          String cookiesData = signedCookieData.serialize();
  
          StringDataStore signedCookieStore = dataStoreFactory.create(Constants.HIDDEN_COOKIE_SPACE);
          return signedCookieStore.storeData(cookiesData);
      }
docs: /*
  Stores signed cookies data and returns a token which can be used
  to retrieve the data from the /aux/cookies DuraStore path