(Program
  (Module
    (Identifier))
  (Function
    (Empty)
    (Identifier)
    ([])
    (Assignment
      (Identifier)
      (Reference
        (Composite
          (Identifier)
          (
            (KeyValue
              (Identifier)
              (Call
                (Identifier)
                (MemberAccess
                  (Identifier)
                  (Identifier))
                (Empty)))))))))