Package org.checkerframework.common.value.qual

Annotation Type UnknownVal

@Documented
@Retention(RUNTIME)
@Target({TYPE_PARAMETER,TYPE_USE})
@SubtypeOf({})
@DefaultQualifierInHierarchy
@InvisibleQualifier
public @interface UnknownVal

UnknownVal is a type annotation indicating that the expression's value is not known at compile type.

See the Checker Framework Manual:

Constant Value Checker