public IActionResult GetByNumbers([FromQuery] int?countSymbols, [FromQuery] bool camelCaseFilter) { DataStorage data = _router.GetContent(); List <string> response = new List <string>(); foreach (string s in data.Data) { if (s.Length > countSymbols) { response.Add(s); } } if (response.Count == 0) { return(BadRequest("Coincidences not found")); } return(Ok(response)); }