RenderingEngineManager (Cytoscape Swing App API (swing-app-api) 3.8.1 API)

```
public interface RenderingEngineManager
```
Manager for RenderingEngine objects. All RenderingEngine objects created by RenderingEngineFactory should be registered to this manager.
Register/unregister engines are handled through RenderingEngineAddedEvents.
Module: presentation-api
To use this in your app, include the following dependency in your POM:
```
<dependency>
    <groupId>org.cytoscape</groupId>
    <artifactId>presentation-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`	`addRenderingEngine(RenderingEngine<?> engine)`	Add new `RenderingEngine` to this manager.
`Collection<RenderingEngine<?>>`	`getAllRenderingEngines()`	Get all `RenderingEngine`s registered in this manager.
`VisualLexicon`	`getDefaultVisualLexicon()`	Provide default `VisualLexicon` from a default engine factory.
`Collection<RenderingEngine<?>>`	`getRenderingEngines(View<?> viewModel)`	Get rendering engines for the given view model.
`void`	`removeRenderingEngine(RenderingEngine<?> engine)`	Remove a rendering engine.

- Method Detail
  - getDefaultVisualLexicon
```
VisualLexicon getDefaultVisualLexicon()
```
    Provide default VisualLexicon from a default engine factory. In current implementation, this is always DING's lexicon.
    
    Returns:
    
    default VisualLexicon.
  - getRenderingEngines
```
Collection<RenderingEngine<?>> getRenderingEngines(View<?> viewModel)
```
    Get rendering engines for the given view model.
    
    Parameters:
    
    viewModel - View model for the presentation.
    
    Returns:
    
    Rendering engines (presentations) associated with the view model.
  - getAllRenderingEngines
```
Collection<RenderingEngine<?>> getAllRenderingEngines()
```
    Get all RenderingEngines registered in this manager.
    
    Returns:
    
    all rendering engines.
  - addRenderingEngine
```
void addRenderingEngine(RenderingEngine<?> engine)
```
    Add new RenderingEngine to this manager.
    This method fires RenderingEngineAddedEvent.
    
    Parameters:
    
    engine - New engine to be added.
  - removeRenderingEngine
```
void removeRenderingEngine(RenderingEngine<?> engine)
```
    Remove a rendering engine.
    This method fires RenderingEngineAboutToBeRemovedEvent.
    
    Parameters:
    
    engine - engine to be removed.