code: function engine() {
      return {
          register(source, gapp) {
              const typo3Engine = require('./lib/typo3.js');
              const handlebars = require('@frctl/handlebars');
              typo3Engine.handlebars = handlebars({}).register(source, gapp);
              typo3Engine.handlebars.load();
              return new TYPO3Adapter(typo3Engine, source); // , gapp
          },
      };
  }
docs: TYPO3 template engine