Closeable

All Known Implementing Classes:

SystemDescriptor
```
public interface Closeable
```
A closeable object is one that can be closed once, and can not be opened again

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`close()`	Idempotent close method.
`boolean`	`isClosed()`	Returns true if the instance has been closed

- Method Detail
  - close
```
boolean close()
```
    Idempotent close method. Returns true if the instance had already been closed
    
    Returns:
    
    true if the object had already been closed, false otherwise
  - isClosed
```
boolean isClosed()
```
    Returns true if the instance has been closed
    
    Returns:
    
    true if the object is closed