public void Run()
        {
            var grepper = new SheetsGrepper();
            var data    = grepper.Fetch("1wG0fe0cv157kIsbGqapP_2n8hzQRET0VspU0t6KyNuU", "Class Data");
            IConfigurationParser parser = new TomlConfigurationParser("test.toml");

            Console.WriteLine("Source: " + parser.Source);
            foreach (var entity in parser.DataModels)
            {
                Console.WriteLine("Model: " + entity.Key);
                foreach (var field in entity.Value)
                {
                    Console.WriteLine("Field: " + field);
                }
            }
            IFilter filter = new ImportanceFilter();

            foreach (var entity in parser.DataModels)
            {
                data = filter.Accept(data, entity.Value);
                foreach (var group in data)
                {
                    Console.WriteLine("Group begins");
                    foreach (var item in group)
                    {
                        Console.WriteLine("Item begins");
                        foreach (var field in item)
                        {
                            Console.WriteLine(String.Format("{0}: {1}", field.Key, field.Value));
                        }
                    }
                }
            }
        }
        public void Run()
        {
            var grepper = new SheetsGrepper();
            var data    = grepper.Fetch("1wG0fe0cv157kIsbGqapP_2n8hzQRET0VspU0t6KyNuU", "Class Data");

            IConfigurationParser parser = new TomlConfigurationParser("test.toml");
            IFilter filter = new ImportanceFilter();

            foreach (var entity in parser.DataModels)
            {
                data = filter.Accept(data, entity.Value);
                foreach (var group in data)
                {
                    new MDIndexGenerator().Generate(
                        group,
                        new SimpleIdGenerator(),
                        @"C:\Users\14714\TestFolder"
                        );
                }
            }
        }