(Statements
  (Package
    (Identifier))
  (Function
    (Identifier)
    (Statements))
  (Function
  { (Identifier)
  ->(Identifier) }
    (Variadic
      (Pointer
        (Identifier))
      (Identifier))
    (Statements))
  (Function
  { (Identifier)
  ->(Identifier) }
    (Variadic
      (Identifier)
      (Empty))
    (Statements))
  (Function
  { (Identifier)
  ->(Identifier) }
    (Statements
      (Identifier))
    (Variadic
      (Identifier)
      (Empty))
    (Statements)))