System.Collections.Generic.List.Add(itemPrefix)

public List<itemPrefix> loadItemPrefixes()
        {
            List<itemPrefix> completed = new List<itemPrefix> { };

            var replacedembly = replacedembly.GetExecutingreplacedembly();
            var resourceName = "WinTerrEdit.itemPrefixes.txt";
            string result;
            using (Stream stream = replacedembly.GetManifestResourceStream(resourceName))
            using (StreamReader reader = new StreamReader(stream))
            {
                result = reader.ReadToEnd();
            }
            List<String> dataArray = result.Split('\n').ToList();

            foreach (string str in dataArray)
            {
                string[] split = str.Split(',');
                completed.Add(new itemPrefix(Int32.Parse(split[0]), split[1]));
            }

            return completed;
        }