(Statements
  (Package
    (Identifier))
  (Function
    (Empty)
    (Identifier)
    (Statements)
    (Call
    { (MemberAccess
      {-(MemberAccess
        {-(Identifier)-})-})
    ->(MemberAccess
      {+(MemberAccess
        {+(Identifier)+})+}) }
      (Statements)
      (Empty))))