How do you get the Identifiable property of an inventory?

Hi,
I’ve made a Inventory with an Identifiable property:

inv = Inventory.builder().of(InventoryArchetypes.CHEST).property(InventoryDimension.PROPERTY_NAME, InventoryDimension.of(9, 2)).property(“test”, new org.spongepowered.api.item.inventory.property.Identifiable()).build(InvTest.this);

but if I’m trying to get the Identifiable instance, the Collection is empty.

inv.getProperties(Identifiable.class);

How do I get the Identifiable instance? :confused: