@SuppressWarnings ( "unchecked" )
    @Override
    public <T extends SmbPipeHandle> T unwrap ( Class<T> type ) {
        if ( type.isAssignableFrom(this.getClass()) ) {
            return (T) this;
        }
        throw new ClassCastException();
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.SmbPipeHandle#getPipe()
     */
    @Override
    public SmbNamedPipe getPipe () {
        return this.pipe;

    private boolean startUpCalled = false;

    @Override
    protected void startUp() {
      startUpCalled = true;
      throw new UnsupportedOperationException("kaboom!");
    }

    @Override
    protected void run() {
      throw new AssertionError("run() should not be called");
    }

    @Override
    protected Executor executor() {
      return exceptionCatchingExecutor;

      }
    }
    return suite;
  }

  /** Throw {@link IllegalStateException} if {@link #createTestSuite()} can't be called yet. */
  protected void checkCanCreate() {
    if (subjectGenerator == null) {
      throw new IllegalStateException("Call using() before createTestSuite().");
    }
    if (name == null) {
      throw new IllegalStateException("Call named() before createTestSuite().");
    }

        try {
            final URLConnection connection = url.openConnection();
            connection.setUseCaches(false);
            return connection.getInputStream();
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }
    }

    /**
     * URLが参照するリモートオブジェクトへの接続を表す{@link URLConnection}オブジェクトを返します。
     *
     * @param url
     *            URL。{@literal null}であってはいけません

      // On android 8.0, socket.connect throws a ClassCastException due to a bug
      // see https://issuetracker.google.com/issues/63649622
      if (Build.VERSION.SDK_INT == 26) {
        throw IOException("Exception in connect", e)
      } else {
        throw e
      }
    }
  }

  override fun trustManager(sslSocketFactory: SSLSocketFactory): X509TrustManager? =
    socketAdapters.find { it.matchesSocketFactory(sslSocketFactory) }

  override fun find(): RealConnection {
    var firstException: IOException? = null
    try {
      while (tcpConnectsInFlight.isNotEmpty() || routePlanner.hasNext()) {
        if (routePlanner.isCanceled()) throw IOException("Canceled")

        // Launch a new connection if we're ready to.
        val now = taskRunner.backend.nanoTime()
        var awaitTimeoutNanos = nextTcpConnectAtNanos - now

    private long lastModified = 1L;
    private int alt;


    /**
     * This is really just for {@link jcifs.netbios.UniAddress}. It does
     * not throw an {@link java.net.UnknownHostException} because this
     * is queried frequently and exceptions would be rather costly to
     * throw on a regular basis here.
     * 
     * @param host
     * @param tc
     * @return resolved name, null if not found
     */

   */
  private static void closeUnchecked(Closeable closeable) {
    try {
      closeable.close();
    } catch (IOException e) {
      throw new UncheckedIOException(e);
    }
  }

  /**
   * Returns the size of this source in chars, if the size can be easily determined without actually
   * opening the data stream.
   *

    }

    private void validateParameters() {
        if (min < 0) {
            throw new IllegalArgumentException("The min parameter cannot be negative.");
        }
        if (max < 0) {
            throw new IllegalArgumentException("The max parameter cannot be negative.");
        }
        if (max < min) {
            throw new IllegalArgumentException("The length cannot be negative.");
        }
    }

        for ( int i = 0; i < 8; i++ ) {
            if ( material[ i ] != NTLMSSP_SIGNATURE[ i ] ) {
                throw new IOException("Not an NTLMSSP message.");
            }
        }
        pos += 8;

        if ( readULong(material, pos) != NTLMSSP_TYPE1 ) {
            throw new IOException("Not a Type 1 message.");
        }
        pos += 4;

        int flags = readULong(material, pos);