所有方法实例方法具体方法
修饰符和类型	方法	说明
`Stream.Consumer`	`getConsumer()`
`long`	`getDeliveryCount()`
`long`	`getDeliveryTime()`
`Stream.ID`	`getId()`
`void`	`setConsumer(Stream.Consumer consumer)`
`void`	`setDeliveryCount(long deliveryCount)`
`void`	`setDeliveryTime(long deliveryTime)`
`void`	`setId(Stream.ID id)`
`String`	`toString()`

public Nack(Stream.ID id,
            Stream.Consumer consumer,
            long deliveryTime,
            long deliveryCount)

public void setConsumer(Stream.Consumer consumer)

public void setDeliveryTime(long deliveryTime)

public void setDeliveryCount(long deliveryCount)

构造器	说明
`Nack()`
`Nack(Stream.ID id, Stream.Consumer consumer, long deliveryTime, long deliveryCount)`

类 Stream.Nack