(Statements
  (Call
  { (MemberAccess
    {-(This)-})
  ->(MemberAccess
    {+(This)+}) }
    (Function
      (Empty)
      (Empty)
      (Empty)
      (RequiredParameter
        (Empty)
        (Empty)
        (Empty)
        (Assignment
          (Identifier)
          (Empty)))
      (Statements
        (Return
        { (MemberAccess
          {-(Identifier)-})
        ->(MemberAccess
          {+(Identifier)+}) })))
    (Empty)))