```
@Retention(RUNTIME)
@Target({METHOD,FIELD})
@Documented
public @interface JsOverlay
```
JsOverlay is used to enhance Java API of the native JsTypes and JsFunctions so richer and more Java friendly abstractions could be provided.
```
 @JsType(isNative=true)
 class Person {
   @JsOverlay
   private static final Person NO_BODY = new Person();

   private String name;
   private String lastName;

   @JsOverlay
   public String getFullName() {
     return (name + " " + lastName).trim();
   }
 }
```
Note that:
- JsOverlay methods cannot override any existing methods.
- JsOverlay methods should be effectively final.
- JsOverlay methods cannot be called from JavaScript
These restrictions are in place to avoid polymorphism because underneath the original type is not modified and the overlay fields/methods are simply turned into static dispatches.

Annotation Type JsOverlay