IdField (Morphia)

```
@Documented
@Inherited
@Retention(RUNTIME)
@Target(TYPE)
public @interface IdField
```
Denotes the ID field on an entity. This field is typically on a parent type outside the current source base and can't be directly annotated with Id

- Required Element Summary
  
  Required Elements
  Modifier and Type Required Element Description
  
  String value

- Element Detail
  - value
```
String value
```
    Returns:
    
    the name of the field to use as the ID field