Use stream

application/src/main/java/org/thingsboard/server/service/edge/rpc/EdgeGrpcSession.java

@@ -133,6 +133,7 @@ import java.util.concurrent.TimeUnit;
 import java.util.concurrent.locks.ReentrantLock;
 import java.util.function.BiConsumer;
 import java.util.function.Consumer;
+import java.util.stream.Collectors;
 
 @Slf4j
 @Data
@@ -430,14 +431,10 @@ public final class EdgeGrpcSession implements Closeable {
     }
 
     private List<DownlinkMsg> convertToDownlinkMsgsPack(List<EdgeEvent> edgeEvents) {
-        List<DownlinkMsg> result = new ArrayList<>();
+        return edgeEvents
-        for (EdgeEvent edgeEvent : edgeEvents) {
+                .stream()
-            DownlinkMsg downlinkMsg = convertToDownlinkMsg(edgeEvent);
+                .map(this::convertToDownlinkMsg)
-            if (downlinkMsg != null) {
+                .collect(Collectors.toList());
-                result.add(downlinkMsg);
-            }
-        }
-        return result;
     }
 
     private DownlinkMsg processEntityMergeRequestMessage(EdgeEvent edgeEvent) {