*/
@Deprecated(since = "4.0.0")
public interface Problem {

    /**
     * The different severity levels for a problem, in decreasing order.
     */
    enum Severity {
        FATAL, //
        ERROR, //
        WARNING //
    }

    /**
     * Gets the hint about the source of the problem. While the syntax of this hint is unspecified and depends on the

    }

    /**
     * Tests the {@link PacUnicodeString#check(String)} method with a valid string.
     *
     * @throws PACDecodingException if the check fails, which is not expected in this test.
     */
    @Test
    void testCheck_withValidString() throws PACDecodingException {
        // Corresponds to a string of length 5 (10 bytes for UTF-16)

    /**
     * The parser request this instance was created from.
     */
    @Nonnull
    ParserRequest parserRequest();

    /**
     * Flag representing parser processing result: if there were some fatal errors during
     * {@link Parser#parseInvocation(ParserRequest)} this method will return {@code true} and invoker should
     * handle this request as "early failure". In these cases, {@link #options()} usually is absent.
     */

            }
        }
    }

    /**
     * Decodes MIME-encoded text.
     *
     * @param value the encoded text to decode
     * @return the decoded text or empty string if decoding fails
     */
    protected String getDecodeText(final String value) {
        if (value == null) {
            return StringUtil.EMPTY;
        }
        try {
            return MimeUtility.decodeText(value);

    }

    /**
     * Get a send region from the pool or allocate a new one
     *
     * @param minSize minimum required size
     * @return memory region for sending
     * @throws IOException if allocation fails
     */
    public RdmaMemoryRegion getSendRegion(int minSize) throws IOException {
        if (minSize <= sendBufferSize) {
            RdmaMemoryRegion region = availableSendRegions.poll();

    }

    /**
     * Establishes RDMA connection to the remote server.
     *
     * @throws IOException if connection fails
     */
    public void connectRdma() throws IOException {
        synchronized (connectionLock) {
            if (rdmaConnection != null && rdmaConnection.isConnected()) {
                return;
            }

     *
     * @param target The object to convert to JSON.
     * @return The XContentBuilder containing the JSON representation of the target.
     * @throws OpenSearchAccessException if the conversion fails.
     */
    protected XContentBuilder getXContentBuilder(final Object target) {
        try {
            final XContentBuilder builder = jsonBuilder().value(target);
            builder.flush();

     * Gets the map of trusted domains for DFS resolution
     * @param auth the authentication credentials
     * @return a map of trusted domain names to domain controllers
     * @throws SmbAuthException if authentication fails
     */
    public HashMap getTrustedDomains(final NtlmPasswordAuthentication auth) throws SmbAuthException {
        if (DISABLED || auth.domain == "?") {
            return null;
        }

  /**
   * Simulate some of the races that can happen on add. We can't easily simulate the race that
   * happens when an {@link AtomicInteger#compareAndSet} fails, but we can simulate the case where
   * the putIfAbsent returns a non-null value, and the case where the replace() of an observed zero
   * fails.
   */
  public void testAdd_withFailures() {
    AtomicInteger existing = new AtomicInteger(12);

     * @param buf the buffer to encode into
     * @throws NdrException if encoding fails
     */
    public abstract void encode_in(NdrBuffer buf) throws NdrException;

    /**
     * Decode the output parameters from this DCERPC message.
     * @param buf the buffer to decode from
     * @throws NdrException if decoding fails
     */
    public abstract void decode_out(NdrBuffer buf) throws NdrException;