(Program
  (Class
    (Identifier)
    (Identifier)
    (Annotation
      (Function
        (Identifier)
        (Identifier)
        (
          (Return
            (Empty))))
      (Empty)))
  (Class
    (Identifier)
    (Annotation
      (Function
        (Identifier)
        (Identifier)
        (
          (Return
            (Identifier))))
      (Empty))))