code: private ResponseEntity<String> makeRestCall(String url) throws HygieiaException {
          String jiraAccess = featureSettings.getJiraCredentials();
          if (StringUtils.isEmpty(jiraAccess)) {
              return restOperations.exchange(url, HttpMethod.GET, null, String.class);
          } else {
              String jiraAccessBase64 = new String(Base64.decodeBase64(jiraAccess));
              String[] parts = jiraAccessBase64.split(":");
              if (parts.length != 2) {
                  throw new HygieiaException("Invalid Jira credentials", HygieiaException.INVALID_CONFIGURATION);
              }
              return restOperations.exchange(url, HttpMethod.GET, new HttpEntity<>(createHeaders(parts[0], parts[1])), String.class);
          }
      }
docs: //////////////// Helper Methods ////////////////////