code: public static URI addToQuery(final URI resourceURI, final String queryString) throws URISyntaxException,
              StorageException {
          return addToSingleUriQuery(resourceURI, parseQueryString(queryString));
      }
docs: Adds a queryString to an URI.
  
  @param resourceURI
  the URI of the resource
  @param queryString
  the query string to add
  @return an appended URI.
  @throws URISyntaxException
  if the resulting URI is invalid.
  @throws StorageException