onWindowStageCreate(windowStage: Window.WindowStage){// Main window is created, set main page for this ability
hilog.isLoggable(0x0000,'testTag', hilog.LogLevel.INFO);
hilog.info(0x0000,'testTag','%{public}s','Ability onWindowStageCreate');
windowStage.createSubWindow("SubWindow",(err, data)=>{})}