code: public static <T> String makeS3CanonicalString(String method,
              String resource, SignableRequest<T> request, String expires) {
          return makeS3CanonicalString(method, resource, request, expires, null);
      }
docs: Calculate the canonical string for a REST/HTTP request to S3 by only
  including query parameters that are mentioned in SIGNED_PARAMETERS.
  
  @see RestUtils#makeS3CanonicalString(String, String, Request, String, boolean)