CyShutdown (Cytoscape Swing App API (swing-app-api) 3.8.0 API)

```
public interface CyShutdown
```
A service that will shutdown Cytoscape cleanly. Will fire a CytoscapeShutdownEvent such that all CytoscapeShutdownListener will be notified before actually shutting down.
Module: application-api
To use this in your app, include the following dependency in your POM:
```
<dependency>
    <groupId>org.cytoscape</groupId>
    <artifactId>application-api</artifactId>
</dependency>
```
Cytoscape Backwards Compatibility (API Interface): We expect that this interface will be used but not implemented by developers using this interface. As such, we reserve the right to add methods to the interface as part of minor version upgrades. We will not remove methods for any changes other than major version upgrades.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`exit(int retVal)`	Calling this method indicates that the application should shutdown.
`void`	`exit(int retVal, boolean force)`	Calling this method indicates that the application should shutdown.

- Method Detail
  - exit
```
void exit(int retVal)
```
    Calling this method indicates that the application should shutdown.
    
    Parameters:
    
    retVal - The return value with which to (eventually) call System.exit(int) with.
  - exit
```
void exit(int retVal,
          boolean force)
```
    Calling this method indicates that the application should shutdown.
    
    Parameters:
    
    retVal - The return value with which to (eventually)
    
    force - If true, force shutdown without prompting user call System.exit(int) with.