public async Task <Guid> AddGroup(AddGroupCommand command, CancellationToken cancellationToken)
{
if (command == null)
{
throw new ArgumentNullException(nameof(command));
}
command.EnsureIsValid();
var groupPersisted = await authorizationRepository.GetGroupBy(command.Name, command.Domain, cancellationToken).ConfigureAwait(false);
if (groupPersisted is not null)
{
throw new BusinessException(Messages.GroupAlreadyExist);
}
var group = new Group()
{
Name = command.Name,
Description = command.Description,
Domain = command.Domain
};
await authorizationRepository.AddGroup(group, cancellationToken).ConfigureAwait(false);
return(group.Id);
}