assertNull(result);
    }

    @Test
    void testPopulateWithIPAddressComponents() throws Exception {
        // Test various IP address formats with different byte values
        File lmhostsFile = tempDir.resolve("lmhosts_ip_components").toFile();
        try (FileWriter writer = new FileWriter(lmhostsFile)) {
            writer.write("0.0.0.0 HOST1\n");

    //                                  --------------------
    /**
     * Set the value of hostname, used in parameter comment. <br>
     * Even if empty string, treated as empty plainly. So "IF pmb != null" is false if empty.
     * @param hostname The parameter value of hostname. (NotNull)
     */
    public void setHostname(String hostname) {
        registerVariable("hostname", hostname);

        Map<String, Object> searchBody = new HashMap<>();
        searchBody.put("size", NUM * 2);
        List<String> valueList = getPropList(searchBody, KEY_PROPERTY);
        for (String value : valueList) {
            assertTrue(value.endsWith(NEW_SUFFIX));
        }
    }

    @Test
    void crudTest() {
        testCreate();
        testRead();
        testUpdate();
        testDelete();
    }

    return System.getProperty("java.runtime.name", "").contains("Android");
  }

  private static boolean isBeforeJava19() {
    return JAVA_SPECIFICATION_VERSION.value().equals("1.8")
        || parseInt(JAVA_SPECIFICATION_VERSION.value()) < 19;
  }

- **Constants classes**: Same pattern

### Argument Validation

Use `AssertionUtil` at method entry:
- `AssertionUtil.assertArgumentNotNull("argName", value)`
- `AssertionUtil.assertArgumentNotEmpty("argName", value)`

### Exception Handling

- Wrap checked exceptions in runtime exceptions from `org.codelibs.core.exception`
- Use error codes (e.g., "ECL0008" = null argument)

### Test Structure

<div class="wrapper">
    <jsp:include page="/WEB-INF/view/common/admin/header.jsp"></jsp:include>
    <jsp:include page="/WEB-INF/view/common/admin/sidebar.jsp">
        <jsp:param name="menuCategoryType" value="suggest"/>
        <jsp:param name="menuType" value="elevateWord"/>
    </jsp:include>
    <main class="content-wrapper">
        <div class="content-header">
            <div class="container-fluid">
                <div class="row mb-2">

  }

  private static final class MockCallback implements FutureCallback<String> {
    @Nullable private String value = null;
    @Nullable private Throwable failure = null;
    private boolean wasCalled = false;
    private final Object monitor = new Object();

    MockCallback(String expectedValue) {
      this.value = expectedValue;
    }

    MockCallback(Throwable expectedFailure) {
      this.failure = expectedFailure;

    SerializableTester.reserializeAndAssert(map.entrySet());
    SerializableTester.reserializeAndAssert(map.keySet());
    assertEquals(
        new ArrayList<>(map.values()),
        new ArrayList<>(SerializableTester.reserialize(map.values())));
  }

  @GwtIncompatible // SerializableTester
  public void testEmpty_serialization() {
    SortedSet<String> set = new SafeTreeSet<>();

    @NullAndEmptySource
    @ValueSource(strings = { "", "share1", "\\\\server\\share", "C$", "ADMIN$", "IPC$" })
    void testConstructorWithDifferentSharenames(String sharename) {
        // Test with various sharename values
        MsrpcShareGetInfo shareGetInfo = new MsrpcShareGetInfo(testServer, sharename);
        assertNotNull(shareGetInfo);
        assertEquals(sharename, shareGetInfo.sharename);

    cache.put(20, 22);
    cache.put(5, 10);

    fakeTicker.advance(501, MILLISECONDS);

    assertThat(cache.asMap().values().contains(22)).isTrue();
    assertThat(cache.asMap().values().contains(10)).isTrue();
    assertThat(cache.asMap().values().contains(20)).isFalse();
  }

  @Test
  @J2ktIncompatible
  public void asMapKeySet() {
    Cache<Integer, Integer> cache =