import com.google.common.annotations.Beta;
import java.util.Set;
-import org.opendaylight.yangtools.yang.common.SchemaNodeIdentifier.Descendant;
import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
import org.opendaylight.yangtools.yang.model.api.meta.StatementDefinition;
+import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier.Descendant;
/**
* Interface describing YANG 'unique' constraint.