response = client.get("/default1?level1=foo")
    assert response.json() == "foo"
    assert response.headers["content-type"] == "application/x-level-0"
    assert "x-level0" in response.headers
    assert "x-level1" not in response.headers
    assert "x-level2" not in response.headers
    assert "x-level3" not in response.headers
    assert "x-level4" not in response.headers
    assert "x-level5" not in response.headers

        // Test multi-level exception chaining
        Exception level1 = new Exception("Level 1");
        RuntimeException level2 = new RuntimeException("Level 2", level1);
        StorageException level3 = new StorageException("Level 3", level2);

        assertEquals("Level 3", level3.getMessage());
        assertEquals(level2, level3.getCause());
        assertEquals("Level 2", level3.getCause().getMessage());

		<Logger name="org.lastaflute" additivity="false" level="${log.level}">
			<AppenderRef ref="AppFile" />
			<AppenderRef ref="LogNotification" />
		</Logger>
		<Logger name="org.opensearch.bootstrap" additivity="false" level="error">
			<AppenderRef ref="AppFile" />
		</Logger>
		<Logger name="com.onelogin.saml2" level="off"/>
		<Logger name="org.codelibs.fess.llm" additivity="false" level="${llm.log.level}">
			<AppenderRef ref="LlmFile" />

        public LogMessage(final LogLevel level, final String message) {
            assertArgumentNotNull("level", level);

            this.level = level;
            this.message = message;
        }

        /**
         * Returns the log level.
         *
         * @return the log level
         */
        public LogLevel getLevel() {
            return level;
        }

        /**

		<LogNotificationAppender name="LogNotification"
			minLevel="${sys:fess.log.notification.level:-ERROR}" />
	</Appenders>

	<Loggers>
		<Logger name="org.codelibs" additivity="false" level="${log.level}">
			<AppenderRef ref="AppFile" />
			<AppenderRef ref="LogNotification" />
		</Logger>
		<Logger name="org.dbflute" additivity="false" level="${log.level}">
			<AppenderRef ref="AppFile" />
			<AppenderRef ref="LogNotification" />

        // Test nested exception handling
        Exception level3 = new RuntimeException("Level 3 error");
        Exception level2 = new IllegalStateException("Level 2 error", level3);
        Exception level1 = new IOException("Level 1 error", level2);
        SsoLoginException exception = new SsoLoginException("Top level SSO error", level1);

        assertEquals("Top level SSO error", exception.getMessage());

        private final String level;

        private final String loggerName;

        private final String message;

        private final String throwable;

        /**
         * Constructs a new LogNotificationEvent.
         *
         * @param timestamp the event timestamp in milliseconds
         * @param level the log level name
         * @param loggerName the logger name

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

    /**

        // Test deeply nested exception causes
        Exception level3 = new Exception("Level 3: Database connection failed");
        Exception level2 = new Exception("Level 2: User lookup failed", level3);
        Exception level1 = new Exception("Level 1: Authentication service error", level2);
        SsoProcessException topLevel = new SsoProcessException("SSO process failed", level1);

        // Verify the chain

    message = "moved to val",
    replaceWith = ReplaceWith(expression = "tlsVersion"),
    level = DeprecationLevel.ERROR,
  )
  fun tlsVersion(): TlsVersion = tlsVersion

  @JvmName("-deprecated_cipherSuite")
  @Deprecated(
    message = "moved to val",
    replaceWith = ReplaceWith(expression = "cipherSuite"),
    level = DeprecationLevel.ERROR,
  )
  fun cipherSuite(): CipherSuite = cipherSuite