function __TS__ClassNewIndex(classTable, key, val)
    local tbl = classTable
    repeat
        do
            local setters = rawget(tbl, "____setters")
            if setters then
                local setter
                setter = setters[key]
                if setter then
                    setter(tbl, val)
                    return
                end
            end
            tbl = rawget(tbl, "____super")
        end
    until not tbl
    rawset(classTable, key, val)
end