```
@Documented
@Target({FIELD,METHOD,PARAMETER,LOCAL_VARIABLE})
@Retention(CLASS)
@Nonnull(when=MAYBE)
@TypeQualifierNickname
public @interface CheckForNull
```
The annotated element might be null, and uses of the element should check for null. When this annotation is applied to a method it applies to the method return value.

Annotation Type CheckForNull