class Pifi
  ofthen(3 , var)
  int ofthen(int n , ref m)
    44
  end
end
-- -- --
s(:list,  [s(:class,  "Pifi",  nil,  [s(:call, 
  s(:name,  "ofthen"), 
  s(:arguments, 
    s(:int,  3), 
    s(:name,  "var"))), s(:function,  :int, 
  s(:name,  "ofthen"), 
  s(:parameters, 
    s(:field,  :int,  :n), 
    s(:field,  :ref,  :m)), 
  s(:expressions, 
    s(:int,  44)))])])