code: function ( key ) {
              // `staticAssets`: default namespace of the grunt-static-versioning plugin
              var obj = data.staticAssets[ key ];
              if ( obj && obj.js ) {
                  return obj.js.map( function ( src ) {
                      return '<script src="' + src + '"></script>';
                  } ).join( '\n ' );
              } else {
                  return '';
              }
          }
docs: render all <script> tags based on key