package org.opendaylight.controller.md.sal.binding.impl;
-import com.google.common.base.Optional;
import java.util.Collection;
import java.util.Map;
+import java.util.Optional;
import org.opendaylight.mdsal.binding.dom.codec.api.BindingNormalizedNodeSerializer;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.common.QName;