import java.util.Optional;
import javax.annotation.Nullable;
import org.eclipse.jdt.annotation.NonNull;
+import org.opendaylight.yangtools.concepts.Identifier;
import org.opendaylight.yangtools.concepts.Immutable;
-public final class QNameModule implements Comparable<QNameModule>, Immutable, Serializable {
+public final class QNameModule implements Comparable<QNameModule>, Immutable, Serializable, Identifier {
private static final Interner<QNameModule> INTERNER = Interners.newWeakInterner();
private static final long serialVersionUID = 3L;