src/vs/workbench/api/browser/mainThreadComments.ts/MainThreadCommentController/getAllComments
class MainThreadCommentController:	getAllComments(): MainThreadCommentThread[] {
		let ret: MainThreadCommentThread[] = [];
		for (let thread of [...this._threads.keys()]) {
			ret.push(this._threads.get(thread)!);
		}

		return ret;
	}