feat: add timeout option and graceful shutdown to Subscription.close() #2037
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Implements a new `timeout` option (using `Duration`) for the `Subscription.close()` method. This provides more control over the shutdown process: - If `timeout` is zero, the subscription closes as quickly as possible without nacking buffered messages. - If `timeout` is positive, the subscription attempts to nack any buffered messages (in the lease manager) and waits up to the specified duration for pending acknowledgements and nacks to be sent to the server. - If no timeout is provided, the behavior remains as before (waits indefinitely for pending acks/modacks, no nacking). The core logic is implemented in `Subscriber.close()`. `PubSub.close()` documentation is updated to clarify its scope and recommend using `Subscription.close()` directly for this feature. Includes: - Unit tests for the new timeout behavior in `Subscriber.close()`. - A TypeScript sample (`samples/closeSubscriptionWithTimeout.ts`) demonstrating usage. - Updated JSDoc documentation for relevant methods.
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Implements a new
timeoutandbehavioroption (usingDuration) for theSubscription.close()method. These options are on the SubscriberOptions/SubscriptionOptions passed in when opening a subscriber.This provides more control over the shutdown process: