CSharpExtendInterface

```
@Retention(SOURCE)
@Target(TYPE)
public @interface CSharpExtendInterface
```
Annotate a Java interface to reference an additional interface with method definitions that will be present in the C# product. The value of the key="" parameter must be the fully-qualified name of an interface definition.

- Optional Element Summary
  
  Optional Elements
  Modifier and Type Optional Element Description
  
  java.lang.String key

- Element Detail
  - key
```
java.lang.String key
```
    Default:
    
    ""