private byte[] toBytes(int value) {
        return toBytes(String.valueOf(value));
    }
Write the raw records into a Kafka topic and return the producer future.

@param context processing context containing the raw record at {@link ProcessingContext#original()}.
@return the future associated with the writing of this record; never null
connect/runtime/src/main/java/org/apache/kafka/connect/runtime/errors/DeadLetterQueueReporter.java