private IEnumerable<TEntity> ReadExcel ()
            using (var stream = File.Open(path, FileMode.Open, FileAccess.Read))
            {
                using (var reader = ExcelReaderFactory.CreateReader(stream))
                {
                    var result = reader.AsDataSet(new ExcelDataSetConfiguration()
                    {
                        UseColumnDataType = true,
                        ConfigureDataTable = (data) => new ExcelDataTableConfiguration()
                        {
                            UseHeaderRow = true
                        }
                    });

                    DataTableCollection tables = result.Tables;
                    DataTable resultTable = tables[typeof(TEntity).Name];
                    List<ChildFromJson> dataList = (from DataRow dr in resultTable.Rows
                                                    select new ChildFromJson()
                                                    {
                                                        Uuid = dr["Uuid"].ToString(),
                                                        Name = dr["Name"].ToString(),
                                                        Titel = dr["Titel"].ToString(),
                                                        Number= Convert.ToBoolean(dr["Number"]),
                                                        Manual = Convert.ToBoolean(dr["Manual"]),
                                                        Parent = dr["Parent"].ToString(),
                                                    }).ToList();



//To poniżej jak zrobić tak by było dobrze :)

                    var klasser = dataList
                            .Select(klasse => new TEntity
                            {
                                   Uuid = class.Uuid,
                                   Name= class.Name,
                                   Titel = class.Titel,
                                   Number= class.Number,
                                   Manual = class.Manual,
                                   Parent = class.Parent
                            });

                    return klasser;
}


        private class ParentFromJson
        {
            public IEnumerable<ChildFromJson> UnderClass{ get; set; }
        }

        private class ChildFromJson
        {
            public string Uuid { get; set; }

            public string Name{ get; set; }

            public string Titel { get; set; }

            public bool Number{ get; set; }

            public bool Manual { get; set; }

            public string Parent { get; set; }
        }