import static org.opendaylight.controller.cluster.datastore.entityownership.EntityOwnersModel.entityTypeFromEntityPath;
-import com.google.common.base.Optional;
import com.google.common.base.Strings;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
+import java.util.Optional;
import javax.annotation.Nonnull;
import org.opendaylight.yangtools.triemap.TrieMap;
import org.opendaylight.yangtools.yang.data.api.schema.LeafNode;