```Python hl_lines="1  4"
{!../../docs_src/python_types/tutorial009.py!}
```

Using `Optional[str]` instead of just `str` will let the editor help you detect errors where you could be assuming that a value is always a `str`, when it could actually be `None` too.

`Optional[Something]` is actually a shortcut for `Union[Something, None]`, they are equivalent.

This also means that in Python 3.10, you can use `Something | None`:

class CipherSuite private constructor(
  /**
   * Returns the Java name of this cipher suite. For some older cipher suites the Java name has the
   * prefix `SSL_`, causing the Java name to be different from the instance name which is always
   * prefixed `TLS_`. For example, `TLS_RSA_EXPORT_WITH_RC4_40_MD5.javaName()` is
   * `"SSL_RSA_EXPORT_WITH_RC4_40_MD5"`.
   */
  @get:JvmName("javaName") val javaName: String,
) {
  @JvmName("-deprecated_javaName")

  optional int32 matchingPrecedence = 2;

  // `distinguisherMethod` defines how to compute the flow distinguisher for requests that match this schema.
  // `nil` specifies that the distinguisher is disabled and thus will always be the empty string.
  // +optional
  optional FlowDistinguisherMethod distinguisherMethod = 3;

  // `rules` describes which requests will match this flow schema. This FlowSchema matches a request if and only if

	}

	toEncode := io.Reader(data)
	if data.Size() > bigFileThreshold {
		// Add input readahead.
		// We use 2 buffers, so we always have a full buffer of input.
		pool := globalBytePoolCap.Load()
		bufA := pool.Get()
		bufB := pool.Get()
		defer pool.Put(bufA)
		defer pool.Put(bufB)

    <sub-class-of type="application/x-msdownload"/>
    <magic priority="55">
      <!-- Technically the header offset is stored at 0x3c, and isn't a -->
      <!-- constant, but it's almost always set to start at 0x80, 0xb0, -->
      <!-- 0xd0 or 0xf0. Will always have the MZ msdoc header too. -->
      <match value="MZ" type="string" offset="0">
         <match value="PE\000\000" type="string" offset="128"/>

import static com.google.common.testing.SerializableTester.reserialize;
import static com.google.common.truth.Truth.assertThat;
import static com.google.common.truth.Truth.assertWithMessage;
import static java.util.Arrays.asList;
import static java.util.Collections.singletonMap;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;

	Serializer             SerializerInterface
	NewValuePool           FieldNewValuePool

	// In some db (e.g. MySQL), Unique and UniqueIndex are indistinguishable.
	// When a column has a (not Mul) UniqueIndex, Migrator always reports its gorm.ColumnType is Unique.
	// It causes field unnecessarily migration.
	// Therefore, we need to record the UniqueIndex on this column (exclude Mul UniqueIndex) for MigrateColumnUnique.
	UniqueIndex string
}

// handlers.
//
// It is set per-"handler function registration" in the router to allow for
// behavior modification via flags.
//
// This middleware always calls `collectAPIStats` to collect API stats.
//
// The passed in handler function must be a method of `objectAPIHandlers` for
// the name displayed in logs and trace to be accurate. The name is extracted
// via reflection.

h3. Plugins need a specific metadata model

Each application will have its own model for plugins. Much of this model will be common across applications but there will always be issues specific to a particular applications’s plugins. Some of the issues that need to be taken into consideration:

* Plugin dependencies
* Plugin resources like JavaScript files or images

In GitHub, the template will guide you to write the right question so that you can more easily get a good answer, or even solve the problem yourself even before asking. And in GitHub I can make sure I always answer everything, even if it takes some time. I can't personally do that with the chat systems. 😅