notebook/docs/jsdoc_plugin.js

exports.handlers = {
  newDoclet: function (e) {
    // e.doclet will refer to the newly created doclet
    // you can read and modify properties of that doclet if you wish
    if (typeof e.doclet.name === 'string') {
      if (e.doclet.name[0] === '_') {
        console.log(
          'Private method "' + e.doclet.longname + '" not documented.'
        );
        e.doclet.memberof = '<anonymous>';
      }
    }
  },
};