*/
package org.opendaylight.mdsal.binding.api;
+import org.eclipse.jdt.annotation.NonNull;
+
/**
* Provides access to a conceptual data tree store and also provides the ability to
* subscribe for changes to data under a given branch of the tree.
* @param listener Transaction chain event listener
* @return A new transaction chain.
*/
- TransactionChain createTransactionChain(TransactionChainListener listener);
+ @NonNull TransactionChain createTransactionChain(@NonNull TransactionChainListener listener);
}