BuildingCoder.CmdSetRoomOccupancy.Execute C# (CSharp) Метод

        public Result Execute(
            ExternalCommandData commandData,
            ref string message,
            ElementSet elements)
        {
            UIApplication app = commandData.Application;
              UIDocument uidoc = app.ActiveUIDocument;
              Document doc = uidoc.Document;

              List<Element> rooms = new List<Element>();
              if( !Util.GetSelectedElementsOrAll(
            rooms, uidoc, typeof( Room ) ) )
              {
            Selection sel = uidoc.Selection;
            message = ( 0 < sel.GetElementIds().Count )
              ? "Please select some room elements."
              : "No room elements found.";
            return Result.Failed;
              }
              using ( Transaction t = new Transaction( doc ) )
              {
            t.Start( "Bump Room Occupancy" );

            foreach ( Room room in rooms )
            {
              BumpOccupancy( room );
            }
            t.Commit();
              }
              return Result.Succeeded;
        }