KeyExtractor (Connect2id common classes v2.52)

```
public interface KeyExtractor<T>
```
Key extractor, intended for JSONObjectWriter use.

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  String extractKey(T object)
  Extracts or determines a JSON object key from the specified object.

- Method Detail
  - extractKey
```
String extractKey(T object)
```
    Extracts or determines a JSON object key from the specified object.
    
    Parameters:
    
    object - The object. Must not be null.
    
    Returns:
    
    The JSON object key, null if extraction failed.