public async Task <PagedResponse <IEnumerable <GetAllCategoriesDto> > > Handle(GetAllCategoriesQuery request, CancellationToken cancellationToken)
{
var validFilter = _mapper.Map <GetAllCategoriesRequest>(request);
var categories = await _CategoryRepository.GetPagedReponseAsync(validFilter.PageNumber, validFilter.PageSize);
var response = _mapper.Map <IEnumerable <GetAllCategoriesDto> >(categories);
return(new PagedResponse <IEnumerable <GetAllCategoriesDto> >(response, validFilter.PageNumber, validFilter.PageSize));
}