Fix generic wildcard bug

spotify · Nov 6, 2015 · d431d41 · d431d41
1 parent 130302f
commit d431d41
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/main/java/com/spotify/futures/CompletableFuturesExtra.java b/src/main/java/com/spotify/futures/CompletableFuturesExtra.java
@@ -97,7 +97,7 @@ public static <T> CompletableFuture<T> exceptionallyCompletedFuture(Throwable th
    */
   public static <T, U> CompletionStage<U> handleCompose(
           CompletionStage<T> future,
-          final BiFunction<? super T, Throwable, CompletionStage<? extends U>> fn) {
+          final BiFunction<? super T, Throwable, ? extends CompletionStage<? extends U>> fn) {
 
     final CompletableFuture<U> result = new CompletableFuture<U>();