docs: @Override
      public String getServerApiVersion() throws DockerAccessException {
          try {
              String url = urlBuilder.version();
              String response = delegate.get(url, 200);
              JsonObject info = JsonFactory.newJsonObject(response);
              return info.get("ApiVersion").getAsString();
          } catch (Exception e) {
              throw new DockerAccessException(e, "Cannot extract API version from server %s", urlBuilder.getBaseUrl());
          }
      }