return null;
    }

    // GET /api/admin/storage/download/{id}/
    @Execute
    public StreamResponse get$download(final String id) {
        final PathInfo pi = convertToItem(id);
        if (StringUtil.isEmpty(pi.getName())) {
            throwValidationErrorApi(messages -> messages.addErrorsStorageFileNotFound(GLOBAL));
        }
        return asStream(pi.getName()).contentTypeOctetStream().stream(out -> {
            try {

     *
     * @param <T>
     *            配列の要素の型
     * @param arrays
     *            配列
     * @return 配列が{@literal null}または長さが0の場合は{@literal true}
     */
    public static <T> boolean isEmpty(final T[] arrays) {
        return arrays == null || arrays.length == 0;
    }

    /**
     * 配列が{@literal null}でも長さが0でもない場合は{@literal true}を返します。
     *
     * @param <T>
     *            配列の要素の型

    assertThat(network.edgesConnecting("A", "A")).containsExactly("AA");
    assertThat(network.edgesConnecting("A", "B")).containsExactly("AB");
    assertThat(network.edgesConnecting("B", "A")).isEmpty();
  }

  @Test
  public void edgesConnecting_undirected() {
    MutableNetwork<String, String> mutableNetwork =
        NetworkBuilder.undirected().allowsSelfLoops(true).build();

    }

    @Override
    public int size() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.size();
    }

    @Override
    public boolean isEmpty() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.isEmpty();
    }

    @Override
    public boolean containsValue(@Nullable Object value) {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.containsValue(value);

  fun takeSink(): BufferedSink {
    return requestBodySinks.poll(5, SECONDS) ?: throw AssertionError("no sink to take")
  }

  fun assertNoMoreSinks() {
    assertTrue(requestBodySinks.isEmpty())
  }

    }

    @Subscribe
    public void subscriber(Object o) {
      subscriberEvents.add(o);
    }
  }

  public void testNonSubscriber() {
    assertThat(getSubscriber().nonSubscriberEvents).isEmpty();
  }

  public void testSubscriber() {
    assertThat(getSubscriber().subscriberEvents).contains(EVENT);
  }

  @Override
  Subscriber createSubscriber() {
    return new Subscriber();
  }

    }

    @Subscribe
    public void subscriber(Object o) {
      subscriberEvents.add(o);
    }
  }

  public void testNonSubscriber() {
    assertThat(getSubscriber().nonSubscriberEvents).isEmpty();
  }

  public void testSubscriber() {
    assertThat(getSubscriber().subscriberEvents).contains(EVENT);
  }

  @Override
  Subscriber createSubscriber() {
    return new Subscriber();
  }

        Set<ApiChange> seenApiChanges = (Set<ApiChange>) context.getUserData().get("seenApiChanges");
        Set<ApiChange> left = new HashSet<>(acceptedApiChanges);
        left.removeAll(seenApiChanges);
        if (!left.isEmpty()) {
            String formattedLeft = CollectionUtils.join("\n", left);
            throw new RuntimeException("The following regressions are declared as accepted, but didn't match any rule:\n\n" + formattedLeft);
        }

            writer.print(problem.getSeverity());
            writer.print("] ");
            writer.print(problem.getMessage());
            String location = problem.getLocation();
            if (!location.isEmpty()) {
                writer.print(" @ ");
                writer.println(location);
            }
        }

        return buffer.toString();
    }

    for (K k : multimap().keySet()) {
      assertTrue(multimap().containsKey(k));
    }
  }

  public void testContainsKeyAgreesWithGet() {
    for (K k : sampleKeys()) {
      assertEquals(!multimap().get(k).isEmpty(), multimap().containsKey(k));
    }
  }

  public void testContainsKeyAgreesWithAsMap() {
    for (K k : sampleKeys()) {
      assertEquals(multimap().containsKey(k), multimap().asMap().containsKey(k));
    }
  }