// TO DO: There is probably a better return value than bool here
private bool CreateAlternateFuelForCustomer(Commands.V1.OperatingContext.Customer.AlternateFuel.CreateForCustomer cmd)
{
if (_repository.AlternateFuelExistsForCustomer(cmd.AlternateFuelId, cmd.CustomerId))
{
throw new InvalidOperationException($"Alternate fuel already exists for Customer {cmd.CustomerId}");
}
_repository.LinkAlternateFuelToCustomer(cmd.AlternateFuelId, cmd.CustomerId);
return(true);
}