SchedulerLifecycle unspecified API

```
public interface SchedulerLifecycle

                    
```
Represents the capability of a Scheduler to be start or shut down its maintained threads.

Method Summary

Modifier and Type	Method	Description
`abstract void`	`start()`	Allows the Scheduler instance to start threadsand accept tasks on them.
`abstract void`	`shutdown()`	Instructs the Scheduler instance to stop threadsand stop accepting tasks on any outstanding Workers.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - start
```
 abstract void start()
```
    Allows the Scheduler instance to start threadsand accept tasks on them.
    Implementations should make sure the call is idempotent and thread-safe.
  - shutdown
```
 abstract void shutdown()
```
    Instructs the Scheduler instance to stop threadsand stop accepting tasks on any outstanding Workers.
    Implementations should make sure the call is idempotent and thread-safe.