(lambda* (#:optional (entities2 #f) (components2 #f))
(let ((e (if (and entities2 components2) entities2 entities))
(c (if (and entities2 components2) components2 components)))
(lambda* (#:optional (entities2 #f) (components2 #f))
(let ((e (if (and entities2 components2) entities2 entities))
(c (if (and entities2 components2) components2 components)))