OptionalconfluentOptionalconnection(Optional) UC connection for registry authentication. Specify if different from the top-level source connection.
Optionalprotobuf(Optional, Protobuf only) Selects a specific message from a schema that defines multiple Protobuf messages. Simple ("Location") or fully-qualified ("com.example.protos.Location"). Defaults to the first message.
Required: Confluent-compatible schema registry options.