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-rw-r--r--services/services-engine/src/main/java/org/onap/policy/apex/service/engine/runtime/ApexEventListener.java1
1 files changed, 1 insertions, 0 deletions
diff --git a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/runtime/ApexEventListener.java b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/runtime/ApexEventListener.java
index a498bcff8..7e43f036e 100644
--- a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/runtime/ApexEventListener.java
+++ b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/runtime/ApexEventListener.java
@@ -30,6 +30,7 @@ import org.onap.policy.apex.service.engine.event.ApexEvent;
*
* @author Sajeevan Achuthan (sajeevan.achuthan@ericsson.com)
*/
+@FunctionalInterface
public interface ApexEventListener {
/**