code: private ResponseEntity<String> makeRestCall(String instanceUrl, String endpoint) {
          String url = normalizeUrl(instanceUrl, "/deployit/" + endpoint);
          ResponseEntity<String> response = null;
          try {
              response = restOperations.exchange(url, HttpMethod.GET,
                      new HttpEntity<>(createHeaders(instanceUrl)), String.class);
  
          } catch (RestClientException re) {
              LOGGER.error("Error with REST url: " + url);
              LOGGER.error(re.getMessage());
          }
          return response;
      }
docs: ////// Helpers