* "http://community.abiquo.com/display/ABI20/Virtual+Datacenter+Resource#VirtualDatacenterResource-Retrieveenabledtiers"
* > http://community.abiquo.com/display/ABI20/Virtual+Datacenter+
* Resource# VirtualDatacenterResource-Retrieveenabledtiers</a>
*/
public Iterable<Tier> listStorageTiers() {
TiersDto tiers = context.getApi().getCloudApi().listStorageTiers(target);
return wrap(context, Tier.class, tiers.getCollection());
}