public static bool IsInitialized(this Oms oms) { if (oms.DefaultTenant == TenantHandle.Empty) { throw new InvalidOperationException("please specify a tenant"); } if (oms.HasInstance(KnownInstanceGuids.Classes.Class) && oms.HasInstance(KnownInstanceGuids.Classes.Attribute) && oms.HasInstance(KnownInstanceGuids.Classes.Relationship)) { return(true); } return(false); }