Address review comments.

federation/pkg/dnsprovider/dns.go

@@ -55,7 +55,7 @@ type ResourceRecordSets interface {
 	// Get returns the ResourceRecordSet list with the name in the Zone.
 	// This is a list because there might be multiple records of different
 	// types for a given name. If the named resource record sets do not
-	// exist, but no error occurred, the returned set will be an empty set
+	// exist, but no error occurred, the returned record set will be empty
 	// and error will be nil.
 	Get(name string) ([]ResourceRecordSet, error)
 	// New allocates a new ResourceRecordSet, which can then be passed to ResourceRecordChangeset Add() or Remove()

federation/pkg/dnsprovider/providers/google/clouddns/internal/stubs/rrsets_service.go

@@ -40,7 +40,7 @@ func (s ResourceRecordSetsService) managedZone(project, managedZone string) (*Ma
 	if z == nil {
 		return nil, fmt.Errorf("Zone %s not found in project %s", managedZone, project)
 	}
-	return s.Service.ManagedZones_.Impl[project][managedZone].(*ManagedZone), nil
+	return z.(*ManagedZone), nil
 }
 
 func (s ResourceRecordSetsService) List(project string, managedZone string) interfaces.ResourceRecordSetsListCall {