function preresolve(dq)
    -- In preresolve I would like to set some flag that postresolve will see.
    local data = {}
    data['dont_modify'] = "1"
    dq.data = data

    return false
end

function postresolve(dq)
    -- This block never ends up happening.
    if dq.data.dont_modify == "1" then
        return false
    end

    dq.variable = true
    dq.rcode = pdns.NOERROR
    dq:addAnswer(pdns.CNAME, 'test.com', 60)
    return true
end