(Program
  (Hash
    (Method
      (Empty)
      (Empty)
      (Empty)
      (Empty)
      (Empty)
      (Identifier)
      (RequiredParameter
        (Empty)
        (Empty)
        (Empty)
        (Assignment
          (Identifier)
          (Empty)))
      (RequiredParameter
        (Empty)
        (Empty)
        (Empty)
        (Assignment
          (Identifier)
          (Empty)))
      (
        (Return
          (Plus
            (Identifier)
            (Identifier)))))))