(Statements
  (Function
    (Identifier)
    (RequiredParameter
      (Identifier))
    (RequiredParameter
      (Identifier))
    (Statements
      (Identifier)))
  (Function
    (Identifier)
    (Statements
      (Identifier)))
  (Function
    (Identifier)
    (RequiredParameter
      (Identifier))
    (Statements
      (Identifier))))