(Program
{+(AnonymousFunction
    (Identifier)
    (Binary
      (Identifier)
      (Other "+")
      (IntegerLiteral)))+}
{-(AnonymousFunction)-}
{-(AnonymousFunction
    (Identifier))-}
{-(AnonymousFunction
    (Identifier)
    (KeywordParameter
      (Identifier)
      (Boolean))
    (OptionalParameter
      (Identifier)
      (Identifier))
    (IntegerLiteral))-}
{-(AnonymousFunction)-}
{-(AnonymousFunction
    (Identifier))-}
{-(AnonymousFunction
    (Identifier)
    (IntegerLiteral))-}
{-(AnonymousFunction
    (Params
      (Identifier)
      (SplatParameter
        (Identifier))
      (Other "destructured_parameter"
        (Identifier)
        (Identifier))))-})