The current docstring of {{rseq}} indicates that its parameter can be a vector or sorted map:
user=> (doc rseq)
-------------------------
clojure.core/rseq
([rev])
Returns, in constant time, a seq of the items in rev (which
can be a vector or sorted-map), in reverse order. If rev is empty returns nil
But, {{rseq}} also works on, say, sorted sets.
Request that the docstring be updated to indicate that {{rseq}} works on any {{rev}} satisfying {{reversible?}}.
