src/vs/workbench/api/common/extHostComments.ts/ExtHostCommentThread/dispose
class ExtHostCommentThread:	dispose() {
		this._isDiposed = true;
		this._acceptInputDisposables.dispose();
		this._localDisposables.forEach(disposable => disposable.dispose());
		this._proxy.$deleteCommentThread(
			this._commentController.handle,
			this.handle
		);
	}