public Task <TResult> DispatchAsync <TQuery, TResult>(TQuery query)
where TQuery : IQuery
where TResult : IQueryResult
{
if (query == null)
{
throw new ArgumentNullException(nameof(query));
}
IQueryHandler <TQuery, TResult> handler = _container.Resolve <IQueryHandler <TQuery, TResult> >();
return(handler.RetrieveAsync(query));
}