errors.add(msg + " in " + res.getDisplayName());
        }

        @Override
        public void warning(SAXParseException ex) {
            LOGGER.warn("xml parsing: {}: {}", getLocationString(ex), ex.getMessage());
        }

        @Override
        public void error(SAXParseException ex) {
            addError("xml parsing: " + getLocationString(ex) + ": " + ex.getMessage());
        }

        @Override