(command-recording-stream :accessor command-recording-stream :initform nil)
(result-recording-stream :accessor result-recording-stream :initform nil)
(record-caches :accessor record-caches :initform nil)
(command-recording-stream :accessor command-recording-stream :initform nil)
(result-recording-stream :accessor result-recording-stream :initform nil)
(record-caches :accessor record-caches :initform nil)