return;
if (this.plafContentManagerUI != null)
this.plafContentManagerUI.uninstall();
PlafContentManagerUI newContentManagerUI = (PlafContentManagerUI) contentManagerUI;
PlafContentManagerUI old = this.plafContentManagerUI;
this.plafContentManagerUI = newContentManagerUI;
newContentManagerUI.install((ContentManagerUI<ContentUI>) old, toolWindowManager);
}