local m = {}
Aux.groups = m


function m.parse_group(datastring)
    return Aux.persistence.deserialize(datastring, ',')
end

function m.parse_item_key(item_key)
    local _, _, item_id, suffix_id = strfind(item_key, '(%d+):?(%d*)')
    return tonumber(item_id), suffix_id == '' and 0 or tonumber(suffix_id)
end

m.test_group = '13127,9510,4438,16254,12006,13131,13012,4413,1482'