/guava/guava/src/com/google/common/util/concurrent/AggregateFuture.java
collectValueFromNonCancelledFuture ( index, future ) ;
() -> { try { if (future.isCancelled()) { futures = null; cancel(false); } else { <extra_id_0> } } finally { decrementCountAndMaybeComplete(null); } }, directExecutor());