const char* attr_name,
                                          unsigned char value);
TF_CAPI_EXPORT extern void TF_SetAttrBoolList(TF_OperationDescription* desc,
                                              const char* attr_name,
                                              const unsigned char* values,
                                              int num_values);

  private static final class AnyOf extends CharMatcher {

    private final char[] chars;

    AnyOf(CharSequence chars) {
      this.chars = chars.toString().toCharArray();
      Arrays.sort(this.chars);
    }

    @Override
    public boolean matches(char c) {
      return Arrays.binarySearch(chars, c) >= 0;
    }

    @Override

  private static final class AnyOf extends CharMatcher {

    private final char[] chars;

    AnyOf(CharSequence chars) {
      this.chars = chars.toString().toCharArray();
      Arrays.sort(this.chars);
    }

    @Override
    public boolean matches(char c) {
      return Arrays.binarySearch(chars, c) >= 0;
    }

    @Override

   *
   * @since 20.0 (varargs overload since 2.0)
   */
  public static void checkArgument(
      boolean expression, String errorMessageTemplate, char p1, char p2) {
    if (!expression) {
      throw new IllegalArgumentException(lenientFormat(errorMessageTemplate, p1, p2));
    }
  }

  /**

   *
   * @since 20.0 (varargs overload since 2.0)
   */
  public static void checkArgument(
      boolean expression, String errorMessageTemplate, char p1, char p2) {
    if (!expression) {
      throw new IllegalArgumentException(lenientFormat(errorMessageTemplate, p1, p2));
    }
  }

  /**

  TFE_ContextOptionsSetAsync(opts, static_cast<unsigned char>(async));
  TFE_Context* ctx = TFE_NewContext(opts, status.get());
  TFE_DeleteContextOptions(opts);
  ASSERT_EQ(TF_OK, TF_GetCode(status.get())) << TF_Message(status.get());
  TFE_TensorHandle* hcpu = TestMatrixTensorHandle(ctx);
  const char* kErrorDevice = "NoSuchDevice:0";
  TFE_TensorHandle* hdevice =

  ASSERT_EQ(TF_OK, TF_GetCode(s_)) << TF_Message(s_);
  EXPECT_TF_META("v", -1, TF_ATTR_STRING, 5);
  std::unique_ptr<char[]> value(new char[5]);

  TF_OperationGetAttrString(oper, "v", value.get(), 5, s_);
  EXPECT_EQ(TF_OK, TF_GetCode(s_)) << TF_Message(s_);
  EXPECT_EQ("bunny", std::string(static_cast<const char*>(value.get()), 5));
}

TEST_F(CApiAttributesTest, StringList) {

            expect_failure);
  }

  // Caller must delete[] the returned value
  static const char** ToArray(const std::vector<std::string>& strs) {
    const char** ptr = nullptr;
    if (!strs.empty()) {
      ptr = new const char*[strs.size()];
      for (size_t i = 0; i < strs.size(); ++i) {
        ptr[i] = strs[i].c_str();
      }
    }
    return ptr;
  }

    private boolean isValidId(String id) {
        for (int i = 0; i < id.length(); i++) {
            char c = id.charAt(i);
            if (!isValidIdCharacter(c)) {
                return false;
            }
        }
        return true;
    }

    private boolean isValidIdCharacter(char c) {

    assertEquals(Object[].class, TypeToken.of(Object[][].class).getComponentType().getType());
    assertEquals(char.class, TypeToken.of(char[].class).getComponentType().getType());
    assertEquals(char[].class, TypeToken.of(char[][].class).getComponentType().getType());
    assertEquals(byte.class, TypeToken.of(byte[].class).getComponentType().getType());