src/vs/workbench/api/browser/mainThreadComments.ts/MainThreadCommentController/deleteCommentThreadMain
class MainThreadCommentController:	deleteCommentThreadMain(commentThreadId: string) {
		this._threads.forEach(thread => {
			if (thread.threadId === commentThreadId) {
				this._proxy.$deleteCommentThread(this._handle, thread.commentThreadHandle);
			}
		});
	}