code: public static String buildCanvasUrl(String canvasBaseUrl, int canvasAPIVersion, String canvasMethod, Map<String, List<String>> parameters) {
          canvasMethod = removeForwardSlashIfExists(canvasMethod);
          String url = canvasBaseUrl + "/api/v" +  canvasAPIVersion + "/" + canvasMethod;
          String finalUrl = url + HttpParameterBuilder.buildParameters(parameters);
          LOG.debug("Built Canvas url - " + finalUrl);
          return finalUrl;
      }
docs: /* Builds parameters in form of ?param[]=value1&param[]=value2&otherParam=someValue