StringGetter (exedio persistence)

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface StringGetter<F>
```

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  String get(F feature)

- Method Detail
  - get
```
String get(F feature)
```