public async Task <IEnumerable <ItemCategoryReadModel> > HandleAsync(AllActiveItemCategoriesQuery query, CancellationToken cancellationToken)
{
if (query is null)
{
throw new ArgumentNullException(nameof(query));
}
var results = await itemCategoryRepository.FindActiveByAsync(cancellationToken);
return(results.Select(r => r.ToReadModel()));
}