(Program
  (Package
    (Identifier))
  (Function
    (Empty)
    (Identifier)
    ([])
    (Assignment
      (Identifier)
      (Reference
        (Composite
          (Identifier)
          (
            (KeyValue
            { (Identifier)
            ->(Identifier) }
            { (Identifier)
            ->(Call
              {+(Identifier)+}
              {+(MemberAccess
                {+(Identifier)+}
                {+(Identifier)+})+}
              {+(Empty)+}) })))))))