import static java.util.Objects.requireNonNull;
+import java.util.Collection;
import java.util.Optional;
-import java.util.Set;
import org.eclipse.jdt.annotation.NonNull;
import org.opendaylight.yangtools.yang.common.QName;
*
* @return set of notification nodes
*/
- @NonNull Set<NotificationDefinition> getNotifications();
+ @NonNull Collection<? extends NotificationDefinition> getNotifications();
/**
* Find a notification based on its QName. Default implementation searches the set returned by