val token = keycloak.keycloakForFetchUserToken(
                    authentication.principal.toString(),
                    authentication.credentials.toString()
                ).tokenManager().accessToken


fun keycloakForFetchUserToken(username:String, password: String): Keycloak {
        return KeycloakBuilder.builder()
            .serverUrl(KeycloakAttributes.SERVER_URL.value())
            .username(username)
            .password(password)
            .realm(KeycloakAttributes.REALM.value())
            .clientId(KeycloakAttributes.CLIENT_ID.value())
            .clientSecret(KeycloakAttributes.CLIENT_SECRET.value())
            .resteasyClient(ResteasyClientBuilder().connectionPoolSize(20).register(CustomJacksonProvider()).build())
            .build()
    }