docs: function initStyle(opt_config) {
    var config = objects.clone(defaultConfig);
    if (opt_config) {
      objects.merge(config, opt_config);
    }
    var attrName = config.attributeName;
    var selector = '[' + attrName + ']';
    var rules = {};
    rules[selector] = {'display': 'none !important'};
    ui.createStyle(rules);
  }