(uuid? x)
Return true if x is a java.util.UUID
(uuid? (java.util.UUID/randomUUID))
;;=> true
(uuid? (read-string "#uuid \\"f81d4fae-7dec-11d0-a765-00a0c91e6bf6\\""))
;;=> true
(uuid? "f81d4fae-7dec-11d0-a765-00a0c91e6bf6")
;;=> false