And **your users** define in some way (for example in a web dashboard somewhere) the **URL** where your app should send those requests.

All the **logic** about how to register the URLs for webhooks and the code to actually send those requests is up to you. You write it however you want to in **your own code**.

     * @param form the search form containing current search criteria
     */
    protected void searchPaging(final RenderData data, final SearchForm form) {
        RenderDataUtil.register(data, "pathMappingItems", pathMappingService.getPathMappingList(pathMapPager)); // page navi

        // restore from pager
        copyBeanToBean(pathMapPager, form, op -> op.include("regex", "replacement"));
    }

        if (form != null) {
            form.clearSecurityInfo();
        }
        return asHtml(virtualHost(path_Login_IndexJsp)).renderWith(data -> {
            RenderDataUtil.register(data, "notification", fessConfig.getNotificationLogin());
            saveToken();
        });
    }

    /**
     * Handles user login with the provided credentials.
     *

 * - URL connection opening
 * - URL creation and parsing
 */
public class HandlerTest {

    private final Handler handler = new Handler();

    @BeforeAll
    static void setupProtocolHandler() {
        // Register the SMB protocol handler
        String pkgs = System.getProperty("java.protocol.handler.pkgs");
        if (pkgs == null) {
            System.setProperty("java.protocol.handler.pkgs", "jcifs.smb1");

	BuildComment                          // //go:build or +build comment
	macroName                             // name of macro that should not be expanded
)

// IsRegisterShift reports whether the token is one of the ARM register shift operators.
func IsRegisterShift(r ScanToken) bool {
	return ROT <= r && r <= LSH // Order looks backwards because these are negative.
}

func (t ScanToken) String() string {
	switch t {
	case scanner.EOF:

    private static final Logger log = LoggerFactory.getLogger(AbstractCIFSContext.class);
    private boolean closed;

    /**
     * Default constructor that registers a shutdown hook for cleanup
     */
    public AbstractCIFSContext() {
        Runtime.getRuntime().addShutdownHook(this);
    }

    /**
     * @param creds the credentials to use

    @Mock
    private Configuration config;
    @Mock
    private ResourceNameFilter nameFilter;

    private SmbFile parent;

    @BeforeAll
    static void setupURLHandler() {
        // Register the SMB URL handler to avoid MalformedURLException
        String pkgs = System.getProperty("java.protocol.handler.pkgs");
        if (pkgs == null) {
            System.setProperty("java.protocol.handler.pkgs", "jcifs");

            } catch (final CIFSException e) {
                log.error("Failed to create singleton JCIFS context", e);
            }
        }
        return INSTANCE;
    }

    /**
     * This static method registers the SMB URL protocol handler which is
     * required to use SMB URLs with the <code>java.net.URL</code> class. If this
     * method is not called before attempting to create an SMB URL with the

        testFacetInfo = new TestFacetInfo();
        testFileTypeHelper = new TestFileTypeHelper();
        testFessConfig = new TestFessConfig();

        ComponentUtil.register(testFacetInfo, "facetInfo");
        ComponentUtil.register(testFileTypeHelper, "fileTypeHelper");
        ComponentUtil.setFessConfig(testFessConfig);
    }

    @Override
    public void tearDown() throws Exception {

So, you can keep raising **FastAPI**'s `HTTPException` as normally in your code.

But when you register an exception handler, you should register it for Starlette's `HTTPException`.

This way, if any part of Starlette's internal code, or a Starlette extension or plug-in, raises a Starlette `HTTPException`, your handler will be able to catch and handle it.