@Documented
@Retention(value=SOURCE)
@Target(value={METHOD,PARAMETER,LOCAL_VARIABLE,FIELD})
public @interface Nullable
NonNullByDefault
.
When decorating a method call parameter, this denotes the parameter can legitimately be null and the method will gracefully deal with it. Typically used on optional parameters.
When decorating a method, this denotes the method might legitimately return null.
This is a marker annotation and it has no specific attributes.