@Override
    public SchemaAndValue toConnectData(String topic, byte[] value) {
        return new SchemaAndValue(Schema.OPTIONAL_BYTES_SCHEMA, value);
    }
Pass-through converter for raw byte data.
<p>
This implementation currently does nothing with the topic names or header keys.
connect/runtime/src/main/java/org/apache/kafka/connect/converters/ByteArrayConverter.java