Minor simplification

2 files changed, 6 insertions, 4 deletions

diff --git a/controller-api/src/main/java/com/yahoo/vespa/hosted/controller/api/integration/resource/MeteringClient.java b/controller-api/src/main/java/com/yahoo/vespa/hosted/controller/api/integration/resource/MeteringClient.java
index 90f1741a2f1..632dbaad419 100644
--- a/controller-api/src/main/java/com/yahoo/vespa/hosted/controller/api/integration/resource/MeteringClient.java
+++ b/controller-api/src/main/java/com/yahoo/vespa/hosted/controller/api/integration/resource/MeteringClient.java
@@ -1,6 +1,7 @@
 // Copyright 2019 Oath Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
 package com.yahoo.vespa.hosted.controller.api.integration.resource;
 
+import java.util.Collection;
 import java.util.List;
 
 /**
@@ -10,7 +11,7 @@ import java.util.List;
  */
 public interface MeteringClient {
 
-    void consume(List<ResourceSnapshot> resources);
+    void consume(Collection<ResourceSnapshot> resources);
 
     MeteringInfo getResourceSnapshots(String tenantName, String applicationName);
 
diff --git a/controller-api/src/main/java/com/yahoo/vespa/hosted/controller/api/integration/stubs/MockMeteringClient.java b/controller-api/src/main/java/com/yahoo/vespa/hosted/controller/api/integration/stubs/MockMeteringClient.java
index ed9c95bb795..10e1eb39c8a 100644
--- a/controller-api/src/main/java/com/yahoo/vespa/hosted/controller/api/integration/stubs/MockMeteringClient.java
+++ b/controller-api/src/main/java/com/yahoo/vespa/hosted/controller/api/integration/stubs/MockMeteringClient.java
@@ -7,6 +7,7 @@ import com.yahoo.vespa.hosted.controller.api.integration.resource.ResourceSnapsh
 import com.yahoo.vespa.hosted.controller.api.integration.resource.MeteringClient;
 
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.Collections;
 import java.util.List;
 import java.util.Optional;
@@ -16,11 +17,11 @@ import java.util.Optional;
  */
 public class MockMeteringClient implements MeteringClient {
 
-    private List<ResourceSnapshot> resources = new ArrayList<>();
+    private Collection<ResourceSnapshot> resources = new ArrayList<>();
     private Optional<MeteringInfo> meteringInfo;
 
     @Override
-    public void consume(List<ResourceSnapshot> resources){
+    public void consume(Collection<ResourceSnapshot> resources){
         this.resources = resources;
     }
 
@@ -32,7 +33,7 @@ public class MockMeteringClient implements MeteringClient {
         });
     }
 
-    public List<ResourceSnapshot> consumedResources() {
+    public Collection<ResourceSnapshot> consumedResources() {
         return this.resources;
     }