How can a Clojure source block contribute its standard-output results as an
example block?  I tried ":results output org" but it expressed the standard
output as a quoted string with \n's where I expected newlines.  For a point
of comparison, org-python seems to be able to do what I want, if "begin_src
org" is effectively the same as "begin_example".  (Is it?)

#+BEGIN_SRC clojure :results output org :exports both
(println "Hello")
(println "world")
#+END_SRC

#+RESULTS:
#+BEGIN_SRC org
"Hello\nworld\n"
#+END_SRC


#+BEGIN_SRC python :results output org :exports both
print "Hello"
print "world"
#+END_SRC

#+RESULTS:
#+BEGIN_SRC org
Hello
world
#+END_SRC