OptionalmessageThe fully-qualified name of the message within schema_text that describes the Kafka payload (e.g. "Event" or "com.example.Event" if schema_text declares a package). Identifies which message is used to decode each Kafka record — a .proto file may declare multiple messages but only one represents the payload. Must not be empty.
OptionalschemaThe raw .proto file text (proto2 and proto3 syntax supported, see https://protobuf.dev/programming-guides/proto3/ and https://protobuf.dev/programming-guides/proto2/).
A Protocol Buffer schema paired with the name of the message within it that describes the Kafka payload. A .proto file may declare multiple messages; message_name disambiguates.