(Statements
  (Function
    (Empty)
    (Empty)
    (Identifier)
    (RequiredParameter
      (Empty)
      (Empty)
      (Identifier)
      (Empty))
    (RequiredParameter
      (Empty)
      (Empty)
      (Identifier)
      (Empty))
    (StatementBlock
      (DoWhile
        (Identifier)
        (Statements
          (Call
            (Identifier)
            (Identifier)
            (Empty)))))))