(Statements
  (Function
  { (Identifier)
  ->(Identifier) }
  {-(RequiredParameter
    {-(Identifier)-})-}
  {-(Identifier)-}
    (Statements
    { (Identifier)
    ->(Identifier) }))
  (Function
    (Identifier)
  {+(RequiredParameter
    {+(Identifier)+})+}
    (Statements
    { (Identifier)
    ->(Identifier) }))
  (Function
  { (Identifier)
  ->(Identifier) }
    (RequiredParameter
    { (Identifier)
    ->(Identifier) })
  {+(Identifier)+}
    (Statements
    { (Identifier)
    ->(Identifier) }))
{+(Function
  {+(Identifier)+}
  {+(Assignment
    {+(Identifier)+}
    {+(Identifier)+})+}
  {+(Statements
    {+(Identifier)+})+})+}
  (Function
    (Identifier)
    (Annotation
      (Assignment
        (Identifier)
      { (Integer)
      ->(TextElement) })
    { (Identifier)
    ->(Identifier) })
  { (Identifier)
  ->(Identifier) }
    (Statements
      (Identifier))))