code: function (helpers) {
              Y.log('Importing helpers: ' + helpers, 'info', 'builder');
              helpers.forEach(function (imp) {
                  if (!Y.Files.exists(imp) || Y.Files.exists(path.join(process.cwd(), imp))) {
                      imp = path.join(process.cwd(), imp);
                  }
                  var h = require(imp);
                  Object.keys(h).forEach(function (name) {
                      Y.Handlebars.registerHelper(name, h[name]);
                  });
              });
          }
docs: Register a `Y.Handlebars` helper method
  @method _addHelpers
  @param {Object} helpers Object containing a hash of names and functions