* they crawl the page. Valid values are:
     * <ul>
     * <li>always</li>
     * <li>hourly</li>
     * <li>daily</li>
     * <li>weekly</li>
     * <li>monthly</li>
     * <li>yearly</li>
     * <li>never</li>
     * </ul>
     * The value "always" should be used to describe documents that change each
     * time they are accessed. The value "never" should be used to describe
     * archived URLs.

    protected static final int MAX_URL_LENGTH = 2048;

    /** Valid changefreq values. */
    protected static final String[] VALID_CHANGEFREQ = { "always", "hourly", "daily", "weekly", "monthly", "yearly", "never" };

    /**
     * Creates a new SitemapsHelper instance.
     */
    public SitemapsHelper() {
        // Default constructor
    }

    /**

        assertTrue(sitemapsHelper.isValidChangefreq("weekly"));
        assertTrue(sitemapsHelper.isValidChangefreq("monthly"));
        assertTrue(sitemapsHelper.isValidChangefreq("yearly"));
        assertTrue(sitemapsHelper.isValidChangefreq("never"));
        assertTrue(sitemapsHelper.isValidChangefreq(null));
        assertTrue(sitemapsHelper.isValidChangefreq(""));

        // Invalid changefreq

If you have a different use case that needs to exit early from a dependency with `yield`, please create a <a href="https://github.com/fastapi/fastapi/discussions/new?category=questions" class="external-link" target="_blank">GitHub Discussion Question</a> with your specific use case and why you would benefit from having early closing for dependencies with `yield`.

///

## Early exit and `scope` { #early-exit-and-scope }

Normally the exit code of dependencies with `yield` is executed **after the response** is sent to the client.

/**
 * Interface used to locate the root directory for a given project.
 *
 * The root locator is usually looked up from the plexus container.
 * One notable exception is the computation of the early {@code session.rootDirectory}
 * property which happens very early.  The implementation used in this case
 * will be discovered using the JDK service mechanism.
 *
 * The default implementation will look for a {@code .mvn} child directory

/** `101 Switching Protocols` (HTTP/1.1 - RFC 9110)  */
const val HTTP_SWITCHING_PROTOCOLS = 101

/** `102 Processing` (WebDAV - RFC 2518)  */
const val HTTP_PROCESSING = 102

/** `103 Early Hints (Early Hints - RFC 8297)` */
const val HTTP_EARLY_HINTS = 103

/** `307 Temporary Redirect` (HTTP/1.1 - RFC 7231)  */
const val HTTP_TEMP_REDIRECT = 307

/** `308 Permanent Redirect` (HTTP/1.1 - RFC 7538)  */

    @Override
    public boolean isRootDirectory(Path dir) {
        if (Files.isDirectory(dir.resolve(".mvn"))) {
            return true;
        }
        // we're too early to use the modelProcessor ...
        Path pom = dir.resolve("pom.xml");
        try (InputStream is = Files.newInputStream(pom)) {
            XMLStreamReader parser = XMLInputFactory.newFactory().createXMLStreamReader(is);

		},
		// Keys and input order of k=v is same.
		{
			input: `connection_string="host=localhost port=2832" comment="really long comment"`,
			keys:  []string{"connection_string", "comment"},
			expectedFields: map[string]struct{}{
				`connection_string="host=localhost port=2832"`: {},
				`comment="really long comment"`:                {},
			},
		},
		// Keys with spaces in between
		{

      // actual response status.
      code == 100 -> true

      // Handle Processing (102) & Early Hints (103) and any new codes without failing
      // 100 and 101 are the exceptions with different meanings
      // But Early Hints not currently exposed
      code in (102 until 200) -> true

      else -> false
    }