Return value in Collection.assertHasValue

opentripplanner · Mar 12, 2024 · 747171e · 747171e
1 parent 3b6b59c
commit 747171e
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/main/java/org/opentripplanner/client/validation/CollectionUtils.java b/src/main/java/org/opentripplanner/client/validation/CollectionUtils.java
@@ -4,10 +4,11 @@
 import java.util.Objects;
 
 public class CollectionUtils {
-  public static void assertHasValue(Collection<?> coll) {
+  public static <T> Collection<T> assertHasValue(Collection<T> coll) {
     Objects.requireNonNull(coll);
     if (coll.isEmpty()) {
       throw new IllegalArgumentException("Collection has no elements.");
     }
+    return coll;
   }
 }