code: public String getRequestParams(Request request) {
          StringBuilder params = new StringBuilder();
          if (request != null && request.getUrlParams() != null) {
              params.append("?");
              for (String key : request.getUrlParams().keySet()) {
                  params.append(key);
                  params.append("=");
                  params.append(String.valueOf(request.getUrlParams().get(key)));
                  params.append("&");
              }
              params.deleteCharAt(params.length() - 1);
          }
          return params.toString();
      }
docs: Returns a string representation of the parameters, able to be appended to the url
  
  @param request - the parameters to be passed to the endpoint for the service
  call
  @return String: the string friendly url parameter representation