Callable<C> combiner, Executor executor) {
      return new CombinedFuture<>(futures, allMustSucceed, executor, combiner);
    }

    /**
     * Creates the {@link ListenableFuture} which will return the result of running {@code combiner}
     * when all Futures complete. {@code combiner} will run using {@code executor}.
     *

    checkState(
        this.maximumWeight == UNSET_INT,
        "maximum weight was already set to %s",
        this.maximumWeight);
    checkState(this.weigher == null, "maximum size can not be combined with weigher");
    checkArgument(maximumSize >= 0, "maximum size must not be negative");
    this.maximumSize = maximumSize;
    return this;
  }

  /**

		}
	}

	// Defensive code: Do not allow any operation if no policy is found in the session token
	if !isOwnerDerived && len(policies) == 0 {
		return false
	}

	// 2. Combine the mapped policies into a single combined policy.

	var combinedPolicy policy.Policy
	// Policies were found, evaluate all of them.
	if !isOwnerDerived {
		availablePoliciesStr, c := sys.store.MergePolicies(strings.Join(policies, ","))

        String append = "Appended content\n";
        try (OutputStream out = file.openOutputStream(true)) { // true = append mode
            out.write(append.getBytes("UTF-8"));
        }

        // Verify combined content
        try (InputStream in = file.getInputStream()) {
            String content = new String(in.readAllBytes(), "UTF-8");

        }
    }

    /**
     * Creates highlighted text from highlight field fragments.
     *
     * @param highlightField the highlight field containing fragments
     * @return the combined highlighted text
     */
    public String createHighlightText(final HighlightField highlightField) {
        final Text[] fragments = highlightField.fragments();
        if (fragments != null && fragments.length != 0) {

	delete(cache.iamPolicyDocsMap, policy)
	cache.updatedAt = time.Now()

	return nil
}

// GetPolicy - gets the policy definition. Allows specifying multiple comma
// separated policies - returns a combined policy.
func (store *IAMStoreSys) GetPolicy(name string) (policy.Policy, error) {
	if name == "" {
		return policy.Policy{}, errInvalidArgument
	}

	cache := store.rlock()
	defer store.runlock()

import com.google.common.util.concurrent.ClosingFuture.Combiner;
import com.google.common.util.concurrent.ClosingFuture.Combiner.AsyncCombiningCallable;
import com.google.common.util.concurrent.ClosingFuture.Combiner.CombiningCallable;
import com.google.common.util.concurrent.ClosingFuture.Combiner2.AsyncClosingFunction2;
import com.google.common.util.concurrent.ClosingFuture.Combiner2.ClosingFunction2;

         */
        I result = requireNonNull(elements[index]);
        elements[index] = null;
        index++;
        return result;
      }
    };
  }

  /**
   * Combines two iterators into a single iterator. The returned iterator iterates across the
   * elements in {@code a}, followed by the elements in {@code b}. The source iterators are not
   * polled until necessary.
   *

	// Marshal metadata
	crc := hashDeterministicBytes(c.MetaSys)
	c.MetaSys = nil
	if bts, err := c.MarshalMsg(metaDataPoolGet()); err == nil {
		crc ^= xxhash.Sum64(bts)
		metaDataPoolPut(bts)
	}

	// Combine upper and lower part
	var tmp [4]byte
	binary.LittleEndian.PutUint32(tmp[:], uint32(crc^(crc>>32)))
	return tmp
}

// UsesDataDir returns true if this object version uses its data directory for

   * iterators that don't support remove, passing one to the FilteredEntryMultimap constructor would
   * lead to a multimap whose removal operations would fail. This method combines the predicates to
   * avoid that problem.
   */
  private static <K extends @Nullable Object, V extends @Nullable Object>
      Multimap<K, V> filterFiltered(