private Map<String, String> createQueryParameters(String gatewayName, String portalUserName, String portalEmail,
String tokenId) {
String callbackUriKey = getEnvironment().getConstants().get(CALLBACK_URI_KEY);
ClientEnvironment clientEnvironment = (ClientEnvironment) getEnvironment();
String callbackUri = clientEnvironment.getCallback().toString();
StringBuilder stringBuilder = new StringBuilder(callbackUri);
stringBuilder.append("?").append(CredentialStoreConstants.GATEWAY_NAME_QUERY_PARAMETER).append("=").append(gatewayName).append("&")
.append(CredentialStoreConstants.PORTAL_USER_QUERY_PARAMETER).append("=").append(portalUserName).append("&")