SubscriptionListener (RabbitMQ Stream Java Client 1.0.0 API)

```
public interface SubscriptionListener
```
Callback interface to customize a subscription.
It is possible to change the computed OffsetSpecification in preSubscribe(SubscriptionContext) by using a custom offset tracking strategy.
This is an experimental API, subject to change.

Nested Class Summary

Nested Classes
Modifier and Type Interface Description

static interface SubscriptionListener.SubscriptionContext
Context object for the subscription.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`preSubscribe(SubscriptionListener.SubscriptionContext subscriptionContext)`	Callback called before the subscription is created.

- Method Detail
  - preSubscribe
```
void preSubscribe(SubscriptionListener.SubscriptionContext subscriptionContext)
```
    Callback called before the subscription is created.
    The method is called when a Consumer is created and it registers to the broker, and also when the subscription must be re-created (after a disconnection or when the subscription must move because the stream member it was connected to becomes unavailable).
    Application code can set the OffsetSpecification that will be used with the SubscriptionListener.SubscriptionContext.offsetSpecification(OffsetSpecification) method.
    
    Parameters:
    
    subscriptionContext -