public async Task <Response> Handle(Request request, CancellationToken cancellationToken)
 => new Response()
 {
     DashboardCards = await _context.DashboardCards
                      .Where(x => request.DashboardCardIds.Contains(x.DashboardCardId))
                      .Select(x => DashboardCardDto.FromDashboardCard(x)).ToListAsync()
 };
 public async Task <Response> Handle(Request request, CancellationToken cancellationToken)
 => new Response()
 {
     DashboardCard = DashboardCardDto.FromDashboardCard(await _context.DashboardCards.FindAsync(request.DashboardCardId))
 };