Lock (Heron Spi Documentation)

```
public interface Lock
```
Interface for a shared lock

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`tryLock(long timeout, TimeUnit unit)`	Wait until timeout for a lock to be available.
`void`	`unlock()`	Release the lock.

- Method Detail
  - tryLock
```
boolean tryLock(long timeout,
                TimeUnit unit)
         throws InterruptedException
```
    Wait until timeout for a lock to be available. Return true if lock is obtained or false if it can not be obtained.
    
    Throws:
    
    InterruptedException
  - unlock
```
void unlock()
```
    Release the lock. Failure to call this method could result in an orphaned lock.