public async Task RemoveGroup(RemoveGroupCommand command, CancellationToken cancellationToken)
{
if (command == null)
{
throw new ArgumentNullException(nameof(command));
}
command.EnsureIsValid();
var group = await authorizationRepository.GetGroupById(command.Id, cancellationToken).ConfigureAwait(false);
if (group is null)
{
throw new BusinessException(Messages.GroupNotFound);
}
await authorizationRepository.RemoveGroup(group, cancellationToken).ConfigureAwait(false);
}