If true, then service instance will be a direct reference to an asset that is loaded using a resource path or an addressable key.
If false, then service instance will be a clone instantiated from an asset that is loaded using a resource path or an addressable key.
If null, and service asset is a prefab, then service instance will be a clone instantiated from the asset.
If null, and service asset is not a prefab, then service instance will be a direct reference to the asset.