code: function( type ) {
              var len = 0;
              var i;
  
              if ( type !== undefined ) {
  
              }
              else {
  
                  for ( i in this._list ) {
                      len += this._list[i].length;
                  }
  
              }
  
              return len;
          }
docs: @param {external:String} type
  
  @this util.event.EventPickerNote
  @returns {external:Number} length List of list