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

All Superinterfaces:

CyListener
```
public interface GroupAboutToCollapseListener
extends CyListener
```
Listener for GroupAboutToCollapseEvent
Module: group-api
To use this in your app, include the following dependency in your POM:
```
<dependency>
    <groupId>org.cytoscape</groupId>
    <artifactId>group-api</artifactId>
</dependency>
```
Cytoscape Backwards Compatibility (SPI Interface): We expect that this interface will be implemented. Therefore to maintain backwards compatibility this interface will only be modified for major version updates.

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  void handleEvent(GroupAboutToCollapseEvent e)
  The method that should handle the specified event.

- Method Detail
  - handleEvent
```
void handleEvent(GroupAboutToCollapseEvent e)
```
    The method that should handle the specified event.
    
    Parameters:
    
    e - The event to be handled.