diff --git a/services/core/java/com/android/server/connectivity/NetworkRanker.java b/services/core/java/com/android/server/connectivity/NetworkRanker.java
index 3aaff59..1cfe60b 100644
--- a/services/core/java/com/android/server/connectivity/NetworkRanker.java
+++ b/services/core/java/com/android/server/connectivity/NetworkRanker.java
@@ -24,6 +24,7 @@
 import static android.net.NetworkScore.POLICY_TRANSPORT_PRIMARY;
 import static android.net.NetworkScore.POLICY_YIELD_TO_BAD_WIFI;
 
+import static com.android.net.module.util.CollectionUtils.filter;
 import static com.android.server.connectivity.FullScore.POLICY_ACCEPT_UNVALIDATED;
 import static com.android.server.connectivity.FullScore.POLICY_EVER_USER_SELECTED;
 import static com.android.server.connectivity.FullScore.POLICY_IS_INVINCIBLE;
@@ -65,18 +66,6 @@
 
     public NetworkRanker() { }
 
-    // TODO : move to module utils CollectionUtils.
-    @NonNull private static <T> ArrayList<T> filter(@NonNull final Collection<T> source,
-            @NonNull final Predicate<T> test) {
-        final ArrayList<T> matches = new ArrayList<>();
-        for (final T e : source) {
-            if (test.test(e)) {
-                matches.add(e);
-            }
-        }
-        return matches;
-    }
-
     /**
      * Find the best network satisfying this request among the list of passed networks.
      */