docs: function (view, locals, context, isAsync) {
      var helpers = {};
      lazy.extend(helpers, this.options.helpers);
      lazy.extend(helpers, this._.helpers.sync);
  
      if (isAsync) lazy.extend(helpers, this._.helpers.async);
      lazy.extend(helpers, locals.helpers);
  
      // build the context to expose as `this` in helpers
      var thisArg = {};
      thisArg.options = lazy.extend({}, this.options, locals);
      thisArg.context = context || {};
      thisArg.context.view = view;
      thisArg.app = this;
  
      // bind template helpers to the instance
      locals.helpers = utils.bindAll(helpers, thisArg);
    }