(Program
  (Class
  { (Identifier)
  ->(Identifier) }
  {-(Identifier)-}
    (Annotation
      (Function
      { (Identifier)
      ->(Identifier) }
        (Identifier)
        (
          (Return
          { (Empty)
          ->(Identifier) })))
      (Empty)))
{+(Class
  {+(Identifier)+}
  {+(NoOp
    {+(Empty)+})+})+}
  (Class
    (Identifier)
  {+(Identifier)+}
    (Annotation
      (Function
      { (Identifier)
      ->(Identifier) }
        (Identifier)
        (
          (Return
          { (Identifier)
          ->(Empty) })))
      (Empty))))