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