presto-kafka/src/main/java/io/prestosql/plugin/kafka/KafkaTableHandle.java/KafkaTableHandle/toString
class KafkaTableHandle:    @Override
    public String toString()
    {
        return toStringHelper(this)
                .add("schemaName", schemaName)
                .add("tableName", tableName)
                .add("topicName", topicName)
                .add("keyDataFormat", keyDataFormat)
                .add("messageDataFormat", messageDataFormat)
                .add("keyDataSchemaLocation", keyDataSchemaLocation)
                .add("messageDataSchemaLocation", messageDataSchemaLocation)
                .toString();
    }