docs: public SystemHook addSystemHook(String url, String token, Boolean pushEvents,
              Boolean tagPushEvents,  Boolean enablSsslVerification) throws GitLabApiException {
  
          if (url == null) {
              throw new RuntimeException("url cannot be null");
          }
  
          GitLabApiForm formData = new GitLabApiForm()
                  .withParam("url", url, true)
                  .withParam("token", token)
                  .withParam("push_events", pushEvents)
                  .withParam("tag_push_events", tagPushEvents)
                  .withParam("enable_ssl_verification", enablSsslVerification);
          Response response = post(Response.Status.CREATED, formData, "hooks");
          return (response.readEntity(SystemHook.class));
      }