code: function transformFilterInAttribute(element, tplOpts, options) {
      let attrs = element.attribs;
      let filterAttrs = element._hasFilterAttrs;
      if (!filterAttrs || !filterAttrs.length) {
          return;
      }
  
      let {logger, file} = tplOpts;
      let {filters} = options;
      filterAttrs.forEach(k => {
          let value = attrs[k];
          attrs[k] = updateFilterCall(filters, logger, file, value);
      });
  }
docs: Transform element node filter info
  
  @param {Object} element the element node to transform
  @param {Object} tplOpts the template transform options
  @param {Object=} options the plugin options, optional