public async Task <IEnumerable <SalesRepresentative> > GetRepresentatives([FromQuery] GetRepresentativesQuery query,
                                                                           CancellationToken cancellationToken)
 {
     return(await _mediator.Send(query, cancellationToken));
 }
 /// <summary>
 /// Handler for <see cref="GetRepresentativesQuery"/>.
 /// </summary>
 /// <param name="request"><see cref="GetRepresentativesQuery"/> request.</param>
 /// <param name="cancellationToken">Cancellation token.</param>
 /// <returns>List of sales representatives.</returns>
 public async Task <IEnumerable <SalesRepresentative> > Handle(GetRepresentativesQuery request, CancellationToken cancellationToken)
 {
     return(await _context.SalesRepresentatives.ToListAsync(cancellationToken));
 }