(Program
  (Module
    (Identifier))
  (Function
    (Identifier)
    (Args)
    (FunctionCall
    { (Identifier)
    ->(Identifier) }
      (Identifier)
      (Other "variadic_argument"
        (Identifier)))
    (FunctionCall
    { (Identifier)
    ->(Identifier) }
      (Identifier)
      (Identifier))
    (FunctionCall
    { (Identifier)
    ->(Identifier) }
      (Identifier)
      (Other "variadic_argument"
        (Identifier)))))