code: public static String getRawQuery(final URI uri, final boolean strict) {
          return esc(strict).escapeQuery(Strings.emptyToNull(uri.getRawQuery()));
      }
docs: Returns the raw (and normalized) query of the given URI, or null if it is empty.
  
  @param uri the URI to extract query from
  @param strict whether or not to do strict escaping
  @return the query or null if it is undefined