public final Future<SimpleHttpResponse> execute(
            final SimpleHttpRequest request,
            final HttpContext context,
            final FutureCallback<SimpleHttpResponse> callback) {
        Args.notNull(request, "Request");
        return execute(SimpleRequestProducer.create(request), SimpleResponseConsumer.create(), context, callback);
    }
Base implementation of {@link HttpAsyncClient} that also implements {@link ModalCloseable}.

@since 5.0
httpclient5/src/main/java/org/apache/hc/client5/http/impl/async/CloseableHttpAsyncClient.java