/guava/android/guava/src/com/google/common/util/concurrent/Futures.java
} return null;
return null; }
return call( new Callable<@Nullable Void>() { @Override @CheckForNull public Void call() throws Exception { combiner.run(); <extra_id_0> }, executor); } } public static <V extends @Nullable Object> ListenableFuture<V> nonCancellationPropagating( ListenableFuture<V> future) {