src/main/java/com/authlete/jaxrs/api/AuthleteApiImpl.java
@Override
    public ClientRegistrationResponse registerClient(ClientRegistrationRequest request) throws AuthleteApiException
    {
        return executeApiCall(
                new ServicePostApiCaller<ClientRegistrationResponse>(
                        ClientRegistrationResponse.class, request, CLIENT_REGISTER_API_PATH));
    }
@Override
    public ClientRegistrationResponse registerClient(ClientRegistrationRequest request) throws AuthleteApiException
    {
        return executeApiCall(
                new ServicePostApiCaller<ClientRegistrationResponse>(
                        ClientRegistrationResponse.class, request, CLIENT_REGISTER_API_PATH));
    }
Call {@code /api/client/register} API.