How to delete relationship in Neo4j Kafka Connector Sink pattern extraction

Integrations
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1

Hi,
In Neo4j kafka connector sink using pattern strategy which has support for Tombstone record, using null as value simply deletes the record. What I'm not clear about is how to delete a node and a relationship via this method?
For example, with the following relationship extraction pattern:
"neo4j.topic.pattern.relationship.follow": "User{!userId} FOLLOW{when} Place{!placeId}"
and data:
{"userId": 123, "placeId": 456, "when": "2023-11-01T00:00:00Z"}
where would the null go to delete the FOLLOW relationship between (:User{userId: 123}) - [r:FOLLOW{"2023-11-01T00:00:00Z"}] - (:Place{placeId: 456})

Thanks