package testlib.util; import java.lang.annotation.ElementType; import java.lang.annotation.Target; import org.checkerframework.framework.qual.ImplicitFor; import org.checkerframework.framework.qual.SubtypeOf; @SubtypeOf({PatternAB.class, PatternAC.class}) @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER}) @ImplicitFor(stringPatterns = "^[A]$") public @interface PatternA {}