private static MatterObject GetOrAddMatter(ClientObject client, CsvData data)
        {
            MatterObject matter = client.Matters.Where(m => m.MatterID == data.MatterId).FirstOrDefault();

            if (matter == null)
            {
                matter = new MatterObject(data.MatterId);
                client.AddMatter(matter);
            }

            return(matter);
        }