public static IEnumerable <SecurityGroupRule> Select(string region, IEnumerable <string> providers, IEnumerable <PortSpec> ingressPorts)
{
return(Providers.Aggregate(new List <SecurityGroupRule>(), (list, provider) =>
{
if (null == providers || provider.NameMatchesAny(providers))
{
list.AddRange(provider.Select(region, ingressPorts));
}
return list;
}));
}