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