public async Task <IActionResult> GetInstrumentsPaged([FromQuery] InstrumentParams instrumentParams)
        {
            var items = await _repo.GetInstrumentsPaged(instrumentParams);

            var itemsDto = _mapper.Map <List <DtoInstrument> >(items);

            Response.AddPagination(items.CurrentPage, items.PageSize, items.TotalCount, items.TotalPages);
            return(Ok(itemsDto));
        }