ExtensiblePlugin (elasticsearch-extend 3.2 API)

```
public interface ExtensiblePlugin
```
An extension point for Plugin implementations to be themselves extensible. This class provides a callback for extensible plugins to be informed of other plugins which extend them.

- Method Summary
  
  All Methods Instance Methods Default Methods
  Modifier and Type Method Description
  
  default void reloadSPI(ClassLoader loader)
  Reload any SPI implementations from the given classloader.

- Method Detail
  - reloadSPI
```
default void reloadSPI(ClassLoader loader)
```
    Reload any SPI implementations from the given classloader.