src/vs/workbench/api/browser/mainThreadTreeViews.ts/MainThreadTreeViews/$setTitle
class MainThreadTreeViews:	$setTitle(treeViewId: string, title: string, description: string | undefined): void {
		this.logService.trace('MainThreadTreeViews#$setTitle', treeViewId, title, description);

		const viewer = this.getTreeView(treeViewId);
		if (viewer) {
			viewer.title = title;
			viewer.description = description;
		}
	}