public UploadAvatarCommandHandler(IHandler handler, IMediatRBus mediatRBus,
IAvatarService avatarService, IFileResolver fileResolver)
{
_handler = handler.CheckIfNotEmpty();
_mediatRBus = mediatRBus.CheckIfNotEmpty();
_avatarService = avatarService.CheckIfNotEmpty();
_fileResolver = fileResolver.CheckIfNotEmpty();
}