@Serial
    private static final long serialVersionUID = 1504740189114877333L;

    /**
     * @param message the message to give
     * @param e the {@link Exception}
     */
    public VersionParserException(String message, Exception e) {
        super(message, e);
    }

        self.active_connections.remove(websocket)

    async def send_personal_message(self, message: str, websocket: WebSocket):
        await websocket.send_text(message)

    async def broadcast(self, message: str):
        for connection in self.active_connections:
            await connection.send_text(message)


manager = ConnectionManager()


@app.get("/")
async def get():
    return HTMLResponse(html)

    public CrawlerSystemException(final String message, final Throwable cause) {
        super(message, cause);
    }

    public CrawlerSystemException(final String message) {
        super(message);
    }

    public CrawlerSystemException(final Throwable cause) {
        super(cause);
    }

    protected CrawlerSystemException(final String message, final boolean enableSuppression, final boolean writableStackTrace) {

    /**
     * Returns the flags currently in use for this message.
     *
     * @return An <code>int</code> containing the flags in use for this
     * message.
     */
    public int getFlags() {
        return flags;
    }

    /**
     * Sets the flags for this message.
     *
     * @param flags The flags for this message.
     */
    public void setFlags(int flags) {
        this.flags = flags;

    }

    public void addMessage(String message) {
        messages.add(message);
    }

    public String toString() {
        return render("");
    }

    public String render(String indentation) {
        if (messages.size() == 0) {
            return indentation + "There were no validation errors.";
        }

        StringBuilder message = new StringBuilder();

    /**
     * Creates a new exception with specified details.
     *
     * @param message The message text, may be {@code null}.
     * @param collisions The POM files of the projects that collided, indexed by their g:a:v, may be {@code null}.
     */
    public DuplicateProjectException(String message, Map<String, List<File>> collisions) {
        super(message, (File) null);

    default void add(BuilderProblem.Severity severity, ModelProblem.Version version, String message) {
        add(severity, version, message, null, null);
    }

    default void add(
            BuilderProblem.Severity severity, ModelProblem.Version version, String message, InputLocation location) {
        add(severity, version, message, location, null);
    }

    default void add(

    }

    /**
     * Creates a Type-3 message using default values from the current
     * environment.
     */
    public Type3Message() {
        setFlags(getDefaultFlags());
        setDomain(getDefaultDomain());
        setUser(getDefaultUser());
        setWorkstation(getDefaultWorkstation());
    }

    /**
     * Creates a Type-3 message in response to the given Type-2 message

        super();
    }


    /**
     * @param message
     * @param cause
     */
    public SMBProtocolDowngradeException ( String message, Throwable cause ) {
        super(message, cause);
    }


    /**
     * @param message
     */
    public SMBProtocolDowngradeException ( String message ) {
        super(message);
    }


    /**
     * @param cause
     */

        super();
    }


    /**
     * @param message
     * @param cause
     */
    public SpnegoException ( String message, Throwable cause ) {
        super(message, cause);
    }


    /**
     * @param message
     */
    public SpnegoException ( String message ) {
        super(message);
    }


    /**
     * @param cause
     */