*/
package org.opendaylight.mdsal.dom.api;
-import com.google.common.base.Optional;
+import java.util.Optional;
import org.opendaylight.yangtools.concepts.Identifiable;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
import org.opendaylight.yangtools.yang.model.api.SchemaContext;