library AutoIndex uses AIDS
    module AutoData
        private static thistype array data
        
        // Fixed up the below to use thsitype instead of integer.
        static method operator []= takes unit u, thistype i returns nothing
            set .data[GetUnitId(u)] = i //Just attaching a struct to the unit
        endmethod                       //using the module's thistype array.
        
        static method operator [] takes unit u returns thistype
            return .data[GetUnitId(u)] //Just returning the attached struct.
        endmethod
    endmodule
endlibrary

local integer private = 0