public override void TestFixtureSetUp()
        {
            base.TestFixtureSetUp();

            _filename = GetFilePathFor("indexfile");
            var empty = IndexMap.CreateEmpty(2, maxTableLevelsForAutomaticMerge: 4);

            empty.SaveToFile(_filename);
        }
        public override async Task TestFixtureSetUp()
        {
            await base.TestFixtureSetUp();

            _filename = GetFilePathFor("indexfile");
            var empty = IndexMap.CreateEmpty(2, 4, Constants.PTableMaxReaderCountDefault);

            empty.SaveToFile(_filename);
        }