src/main/java/com/authlete/jaxrs/api/AuthleteApiImpl.java
@Override
    public BackchannelAuthenticationResponse backchannelAuthentication(BackchannelAuthenticationRequest request) throws AuthleteApiException
    {
        return executeApiCall(
                new ServicePostApiCaller<BackchannelAuthenticationResponse>(
                        BackchannelAuthenticationResponse.class, request, BACKCHANNEL_AUTHENTICATION_API_PATH));
    }
@Override
    public BackchannelAuthenticationResponse backchannelAuthentication(BackchannelAuthenticationRequest request) throws AuthleteApiException
    {
        return executeApiCall(
                new ServicePostApiCaller<BackchannelAuthenticationResponse>(
                        BackchannelAuthenticationResponse.class, request, BACKCHANNEL_AUTHENTICATION_API_PATH));
    }
Call {@code /api/backchannel/authentication} API.