final PathInfo pi = convertToItem(id);
        if (StringUtil.isEmpty(pi.getName())) {
            throwValidationErrorApi(messages -> messages.addErrorsStorageFileNotFound(GLOBAL));
        }
        return asStream(pi.getName()).contentTypeOctetStream().stream(out -> {
            try {
                downloadObject(getObjectName(pi.getPath(), pi.getName()), out);

    in.put(Number.class, 0);
    in.put(Double.class, Math.PI);
    ClassToInstanceMap<Number> map = ImmutableClassToInstanceMap.copyOf(in);
    assertEquals(2, map.size());

    Number zero = map.getInstance(Number.class);
    assertEquals(0, zero);

    Double pi = map.getInstance(Double.class);
    assertThat(pi).isEqualTo(Math.PI);

    assertSame(map, ImmutableClassToInstanceMap.copyOf(map));
  }

    @Override
    public BigInteger apply(Integer from) {
      BigInteger v = BigInteger.valueOf(from);
      // Math.sin is very slow for values outside 4*pi
      // Need to take absolute value to avoid inverting the value.
      for (double i = 0; i < 100; i += 20) {
        v =
            v.add(
                v.multiply(