src/vs/workbench/api/common/extHostComments.ts/ExtHostCommentsImpl/$deleteCommentThread
class ExtHostCommentsImpl:		$deleteCommentThread(commentControllerHandle: number, commentThreadHandle: number) {
			const commentController = this._commentControllers.get(commentControllerHandle);

			if (commentController) {
				commentController.$deleteCommentThread(commentThreadHandle);
			}
		}