Hello, please help me with the question

I need to refer from the main repository to the nodes connected

as an external source (we create our custom Connector for the jdbc table).

We are faced with assert assertateSameSourceForAllNodes in the org.modeshape.jcr.federation.FederatedDocumentStore.

As a result, I can not create a Referrer on such external node.

What is the most appropriate way to refer to such external nodes?