* @param code Status code as defined by
   *     [Section 7.4 of RFC 6455](http://tools.ietf.org/html/rfc6455#section-7.4).
   * @param reason Reason for shutting down, no longer than 123 bytes of UTF-8 encoded data (**not** characters) or null.
   * @throws IllegalArgumentException if [code] is invalid or [reason] is too long.
   */
  fun close(
    code: Int,
    reason: String?,
  ): Boolean

  /**

		closestCommands = append(closestCommands, commandsTree.PrefixMatch(command)...)

		sort.Strings(closestCommands)
		// Suggest other close commands - allow missed, wrongly added and
		// even transposed characters
		for _, value := range commandsTree.Walk(commandsTree.Root()) {
			if sort.SearchStrings(closestCommands, value) < len(closestCommands) {
				continue
			}
			// 2 is arbitrary and represents the max

        } catch (ConfigPropertyNotFoundException e) {
            // Expected exception
            assertNotNull(e);
        }
    }

    // Test special characters in property values
    public void test_get_specialCharacters() {
        String testKey = "special.chars";
        String specialValue = "!@#$%^&*()_+-=[]{}|;':\",./<>?";

    /**
     * A map of field rules.
     */
    protected Map<String, String> fieldRuleMap = new LinkedHashMap<>();

    /** a flag to trim a space characters. */
    protected boolean trimSpaceEnabled = true;

    /**
     * The charset name.
     */
    protected String charsetName = Constants.UTF_8;

    /**

        assertEquals("", chain.changePasswordCalls.get(0).getKey());
        assertEquals("", chain.changePasswordCalls.get(0).getValue());
    }

    // Test changePassword with special characters
    public void test_changePassword_specialCharacters() {
        TestAuthenticationChain chain = new TestAuthenticationChain();
        chain.changePasswordResult = true;

        // Each should be a different instance
        assertNotSame(provider1, provider2);
        assertNotSame(provider2, provider3);
        assertNotSame(provider1, provider3);
    }

    // Test with special characters in time adjustment string
    public void test_specialCharactersInTimeAdjustment() {
        FessConfig specialConfig = new FessConfig.SimpleImpl() {
            private static final long serialVersionUID = 1L;

        // Verify query was processed
        // Note: Field logging behavior depends on implementation
    }

    public void test_convertPhraseQuery_withSpecialCharacters() {
        // Test with special characters in query
        PhraseQuery.Builder builder = new PhraseQuery.Builder();
        builder.add(new Term(Constants.DEFAULT_FIELD, "test@#$"));
        PhraseQuery phraseQuery = builder.build();

    assertThat(formEncode(255)).isEqualTo("%C3%BF")
  }

  @Throws(IOException::class)
  private fun formEncode(codePoint: Int): String {
    // Wrap the codepoint with regular printable characters to prevent trimming.
    val body =
      FormBody
        .Builder()
        .add("a", String(intArrayOf('b'.code, codePoint, 'c'.code), 0, 3))
        .build()
    val buffer = Buffer()

        assertNotNull(settings);
    }

    @Test
    public void testSpecialCharactersInIndexName() {
        // Test index name with special characters
        builder.setSettingsIndexName("Test-Index_Name.2024");
        assertEquals("test-index_name.2024", builder.settingsIndexName);

        // Test index name with spaces (should be lowercased)

    private val DASHDASH = byteArrayOf('-'.code.toByte(), '-'.code.toByte())

    /**
     * Appends a quoted-string to a StringBuilder.
     *
     * RFC 2388 is rather vague about how one should escape special characters in form-data
     * parameters, and as it turns out Firefox and Chrome actually do rather different things, and
     * both say in their comments that they're not really sure what the right approach is. We go