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// Test case for Issue 989:
// https://github.com/typetools/checker-framework/issues/989
import java.io.Serializable;
import java.util.Collection;
import java.util.List;
import org.checkerframework.checker.nullness.qual.NonNull;
interface ListWrapper989a<E> extends List<@NonNull E> {}
interface ListWrapper989b<E> extends Serializable, List<@NonNull E> {}
interface ListWrapper989c<E> extends Collection<@NonNull E>, Serializable, List<@NonNull E> {}
public class Issue989 {
void usea(ListWrapper989a<Boolean> list) {
list.get(0);
}
void useb(ListWrapper989b<Boolean> list) {
list.get(0);
}
void usec(ListWrapper989c<Boolean> list) {
list.get(0);
}
}
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