SenseNet.ContentRepository.Storage.Schema.SchemaRoot.GetSchemaTimestamp C# (CSharp) Метод

        private static long GetSchemaTimestamp(DataSet dataSet)
        {
            if (dataSet == null) // usecase: in tests
                return 0;
            var table = dataSet.Tables["SchemaModification"];
            if(table == null) // usecase: in tests
                return 0;
            var rows = table.Rows;
            if (rows.Count == 0)
                return 0;
            var row = rows[0];
            return SenseNet.ContentRepository.Storage.Data.SqlClient.SqlProvider.GetLongFromBytes((byte[])row["Timestamp"]);
        }
		private static Dictionary<int, DataType> BuildDataTypeHelper(DataSet dataSet)