class DeviceFragmentId {

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (!(obj instanceof DeviceFragmentId)) {
            return false;
        }
        DeviceFragmentId that = (DeviceFragmentId) obj;
        return Objects.equals(this.deviceId, that.deviceId) &&
               Objects.equals(this.providerId, that.providerId);
    }

    public  DeviceFragmentId(DeviceId deviceId, ProviderId providerId);
    @SuppressWarnings("unused") private  DeviceFragmentId();

}