code: function(target){
      target = target || {};
      var templateHelpers = Marionette.getOption(this, "templateHelpers");
      if (_.isFunction(templateHelpers)){
        templateHelpers = templateHelpers.call(this);
      }
      return _.extend(target, templateHelpers);
    }
docs: Mix in template helper methods. Looks for a `templateHelpers` attribute, which can either be an object literal, or a function that returns an object literal. All methods and attributes from this object are copies to the object passed in.