```Python
async with lifespan(app):
    await do_stuff()
```

When you create a context manager or an async context manager like above, what it does is that, before entering the `with` block, it will execute the code before the `yield`, and after exiting the `with` block, it will execute the code after the `yield`.

   * removeAll}, and {@code replaceValues} methods return {@code RandomAccess} lists if the factory
   * does. However, the multimap's {@code get} method returns instances of a different class than
   * does {@code factory.get()}.
   *
   * <p>The multimap is serializable if {@code map}, {@code factory}, the lists generated by {@code

   * removeAll}, and {@code replaceValues} methods return {@code RandomAccess} lists if the factory
   * does. However, the multimap's {@code get} method returns instances of a different class than
   * does {@code factory.get()}.
   *
   * <p>The multimap is serializable if {@code map}, {@code factory}, the lists generated by {@code

 * fallout from trying to switch. I would be shocked if the switch would offer benefits to anywhere
 * near enough users to justify the costs.
 *
 * Fortunately, if anyone does want to use a Converter as a `Function<@Nullable A, @Nullable B>`,
 * it's easy to get one: `converter::convert`.
 *
 * [*] In annotating this class, we're ignoring LegacyConverter.
 */

  /**
   * Start the service.
   *
   * <p>By default this method does nothing.
   */
  protected void startUp() throws Exception {}

  /**
   * Stop the service. This is guaranteed not to run concurrently with {@link #runOneIteration}.
   *
   * <p>By default this method does nothing.
   */
  protected void shutDown() throws Exception {}

  /**

			tw.hdr.Typeflag = TypeReg
		}
	}

	// Round ModTime and ignore AccessTime and ChangeTime unless
	// the format is explicitly chosen.
	// This ensures nominal usage of WriteHeader (without specifying the format)
	// does not always result in the PAX format being chosen, which
	// causes a 1KiB increase to every header.
	if tw.hdr.Format == FormatUnknown {
		tw.hdr.ModTime = tw.hdr.ModTime.Round(time.Second)
		tw.hdr.AccessTime = time.Time{}

        }
    }

    /**
     * Return a string represeting this ACE.
     * <p>
     * Note: This function should probably be changed to return SDDL
     * fragments but currently it does not.
     */
    @Override
    public String toString() {
        final StringBuffer sb = new StringBuffer();
        sb.append(isAllow() ? "Allow " : "Deny  ");
        appendCol(sb, this.sid.toDisplayString(), 25);

    }

    @Test
    void testRegisterSmbURLHandlerWhenPkgsDoesNotContainJcifs() {
        // Test registerSmbURLHandler when java.protocol.handler.pkgs does not contain "jcifs"
        System.setProperty("java.protocol.handler.pkgs", "com.example");
        SingletonContext.registerSmbURLHandler();

    }

    /**
     * Test decrypt with DES encryption.
     *
     * @throws GeneralSecurityException if a security error occurs
     * @throws NoSuchAlgorithmException if the algorithm is not available
     */
    @Test
    void testDecryptDes() throws GeneralSecurityException, NoSuchAlgorithmException {
        KeyGenerator keyGen = KeyGenerator.getInstance("DES");
        keyGen.init(56);

		}
		if !atEOF {
			return 0, nil, nil
		}
		// There is one final token to be delivered, which may be the empty string.
		// Returning bufio.ErrFinalToken here tells Scan there are no more tokens after this
		// but does not trigger an error to be returned from Scan itself.
		return 0, data, bufio.ErrFinalToken
	}
	scanner.Split(onComma)
	// Scan.
	for scanner.Scan() {
		fmt.Printf("%q ", scanner.Text())
	}