src/vs/workbench/api/common/extHostComments.ts/ExtHostCommentController/$createCommentThreadTemplate
class ExtHostCommentController:	$createCommentThreadTemplate(uriComponents: UriComponents, range: IRange): ExtHostCommentThread {
		const commentThread = new ExtHostCommentThread(this._proxy, this, undefined, URI.revive(uriComponents), extHostTypeConverter.Range.to(range), [], this._extension.identifier);
		commentThread.collapsibleState = modes.CommentThreadCollapsibleState.Expanded;
		this._threads.set(commentThread.handle, commentThread);
		return commentThread;
	}