in flink-connector-rabbitmq/src/main/java/org/apache/flink/streaming/connectors/rabbitmq/RMQSink.java [89:94]
public RMQSink(
RMQConnectionConfig rmqConnectionConfig,
String queueName,
SerializationSchema<IN> schema) {
this(rmqConnectionConfig, queueName, schema, null, null);
}