private JsonStructure executarWS(String url, HttpMethod metodoHTTP, Object parametros) throws GenericException {
        HttpEntity<String> httpEntity = new HttpEntity<>(parametros.toString(), createHeaders());

        // TODO Remover após testes
        SimpleClientHttpRequestFactory clientHttpRequestFactory = new SimpleClientHttpRequestFactory();
        Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("192.168.3.28", 8080));
        clientHttpRequestFactory.setProxy(proxy);

        RestTemplate rt = new RestTemplate(clientHttpRequestFactory);

        String strJsonResposta = "";

        try {
            if (HttpMethod.POST.equals(metodoHTTP)) {
                strJsonResposta = rt.postForObject(url, httpEntity, String.class);
            } else if (HttpMethod.GET.equals(metodoHTTP)) {
                strJsonResposta = rt.getForObject(url, String.class);
            }
        } catch (RestClientException e) {
            throw new GenericException("Erro inesperado", e);
        }

        try {
            return Json.createReader(new StringReader(strJsonResposta)).readObject();
        } catch (JsonException e) {
            return Json.createReader(new StringReader(strJsonResposta)).readArray();
        }
    }