EventConfigSource (Helidon Project 2.6.9 API)

All Known Implementing Classes:

PrefixedConfigSource
```
public interface EventConfigSource
```
A source that supports notifications when changed.

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  void onChange(BiConsumer<String,ConfigNode> changedNode)
  Register a change listener.

- Method Detail
  - onChange
```
void onChange(BiConsumer<String,ConfigNode> changedNode)
```
    Register a change listener.
    
    Parameters:
    
    changedNode - the key and node of the configuration that changed. This may be the whole config tree, or a specific node depending on how fine grained the detection mechanism is. To notify of a whole node being changed, use empty string as a key