DoNotCall (error-prone annotations 2.16 API)

```
@Retention(CLASS)
@Target(METHOD)
public @interface DoNotCall
```
The method to which this annotation is applied cannot be called.
The annotation is applied to methods that are required to satisfy the contract of an interface, but that are not supported. One example is the implementation of Collection.add(E) in an immutable collection implementation.
Marking methods annotated with @DoNotCall as @Deprecated is recommended, since it provides IDE users with more immediate feedback.

- Optional Element Summary
  
  Optional Elements
  Modifier and Type Optional Element Description
  
  String value
  An optional explanation of why the method should not be called.

- Element Detail
  - value
```
String value
```
    An optional explanation of why the method should not be called.
    
    Default:
    
    ""