public void testFrom() {
    Function<String, Integer> forward = Integer::parseInt;
    Function<Object, String> backward = toStringFunction();

    Converter<String, Number> converter = Converter.<String, Number>from(forward, backward);

    assertThat(converter.convert(null)).isNull();
    assertThat(converter.reverse().convert(null)).isNull();

    assertEquals((Integer) 5, converter.convert("5"));

	"time"
)

var (
	errLifecycleInvalidDate         = Errorf("Date must be provided in ISO 8601 format")
	errLifecycleInvalidDays         = Errorf("Days must be positive integer when used with Expiration")
	errLifecycleInvalidExpiration   = Errorf("Exactly one of Days (positive integer) or Date (positive ISO 8601 format) should be present inside Expiration.")

        // Valid inputs: each known code must map to its documented message
        assertEquals(expectedMessage, lookupMessage(code).orElse(null));
    }

    @ParameterizedTest
    @ValueSource(ints = { -1, Integer.MIN_VALUE, Integer.MAX_VALUE })
    @DisplayName("Unknown codes: lookup returns empty Optional")
    void lookup_returns_empty_for_unknown_codes(int unknownCode) {
        // Invalid inputs: codes not present should yield no message

        if (actualVersion.isCompatibleWith(requiredVersion) == false) {
            throwInvalidJavaHomeException(
                description,
                javaHome,
                Integer.parseInt(requiredVersion.getMajorVersion()),
                Integer.parseInt(actualVersion.getMajorVersion())
            );
        }

        return actualVersion;
    }

     * @return The list of page numbers.
     */
    public List<Integer> getPageNumberList() {
        return pageNumberList;
    }

    /**
     * Sets the list of page numbers.
     * @param pageNumberList The list of page numbers.
     */
    public void setPageNumberList(final List<Integer> pageNumberList) {
        this.pageNumberList = pageNumberList;
    }

    /**

  }

  public void testTransform() throws Exception {
    FluentFuture<Integer> f =
        FluentFuture.from(immediateFuture(1)).transform(i -> i + 1, directExecutor());
    assertThat(f.get()).isEqualTo(2);
  }

  public void testTransformAsync() throws Exception {
    FluentFuture<Integer> f =
        FluentFuture.from(immediateFuture(1))

     *
     * @return the list of page numbers
     */
    public List<Integer> getPageNumberList() {
        return pageNumberList;
    }

    /**
     * Sets the list of page numbers for pagination navigation.
     *
     * @param pageNumberList the list of page numbers
     */
    public void setPageNumberList(final List<Integer> pageNumberList) {
        this.pageNumberList = pageNumberList;
    }

                                                 styleClass="form-control" title="Integer"
                                                 data-validation="custom" data-validation-regexp="^(\d+)?$"
                                                 data-validation-help="number (Integer)"/>
                                    </div>
                                </div>

     *
     * @return The list of page numbers
     */
    public List<Integer> getPageNumberList() {
        return pageNumberList;
    }

    /**
     * Sets the list of page numbers for navigation display.
     *
     * @param pageNumberList The list of page numbers to set
     */
    public void setPageNumberList(final List<Integer> pageNumberList) {
        this.pageNumberList = pageNumberList;
    }

     *
     * @return The list of page numbers
     */
    public List<Integer> getPageNumberList() {
        return pageNumberList;
    }

    /**
     * Sets the list of page numbers for pagination.
     *
     * @param pageNumberList The list of page numbers
     */
    public void setPageNumberList(final List<Integer> pageNumberList) {
        this.pageNumberList = pageNumberList;
    }

    /**