import com.google.common.base.Preconditions;
import com.google.common.base.Throwables;
import java.util.concurrent.atomic.AtomicReferenceFieldUpdater;
-import javax.annotation.Nullable;
+import org.eclipse.jdt.annotation.Nullable;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification;