* For example, if the {@link #obtain()} method calls {@code System.getenv("FOO")} then changes to
 * the {@code FOO} environment variable only invalidate the cache if the value returned by the
 * {@code obtain()} method itself changes. The same applies to reading files or system properties.
 * Starting an external process with a standard API (for example, {@code java.lang.ProcessBuilder}) is
 * also allowed.

To see all the options you have, checkout the docs for <a href="https://docs.pydantic.dev/latest/concepts/types/" class="external-link" target="_blank">Pydantic's exotic types</a>. You will see some examples in the next chapter.

For example, as in the `Image` model we have a `url` field, we can declare it to be an instance of Pydantic's `HttpUrl` instead of a `str`:

=== "Python 3.10+"

    ```Python hl_lines="2  8"

import org.jetbrains.kotlin.name.ClassId
import org.jetbrains.kotlin.psi.KtCallElement

/**
 * Application of annotation to some declaration, type, or as argument inside another annotation.
 *
 * Some examples:
 * - For declarations: `@Deprecated("Should not be used") fun foo(){}`
 * - For types: `fun foo(x: List<@A Int>){}`
 * - Inside another annotation (`B` is annotation here): `@A(B()) fun foo(){}
 */

See [Controlling the injection policy](https://istio.io/latest/docs/setup/additional-setup/sidecar-injection/#controlling-the-injection-policy) for more info.

### Examples

#### Egress Gateway

Deploying a Gateway to be used as an [Egress Gateway](https://istio.io/latest/docs/tasks/traffic-management/egress/egress-gateway/):

```yaml
service:

)

// String returns a name for the level.
// If the level has a name, then that name
// in uppercase is returned.
// If the level is between named values, then
// an integer is appended to the uppercased name.
// Examples:
//
//	LevelWarn.String() => "WARN"
//	(LevelInfo+2).String() => "INFO+2"
func (l Level) String() string {
	str := func(base string, val Level) string {
		if val == 0 {
			return base
		}

  // On Windows this method also replaces the alternate path separator '/' with
  // the primary path separator '\\', so that for example "bar\\/\\foo" becomes
  // "bar\\foo".

  void Normalize();

  // Returns a pointer to the last occurrence of a valid path separator in
  // the FilePath. On Windows, for example, both '/' and '\' are valid path
  // separators. Returns NULL if no path separator was found.

```

With a server that holds a certificate and a client that trusts it we have enough for an HTTPS
handshake. The best part of this example is that we don't need to make our test code insecure with a
a fake `HostnameVerifier` or `X509TrustManager`.

Certificate Authorities
-----------------------

The above example uses a self-signed certificate. This is convenient for testing but not

  // On Windows this method also replaces the alternate path separator '/' with
  // the primary path separator '\\', so that for example "bar\\/\\foo" becomes
  // "bar\\foo".

  void Normalize();

  // Returns a pointer to the last occurrence of a valid path separator in
  // the FilePath. On Windows, for example, both '/' and '\' are valid path
  // separators. Returns NULL if no path separator was found.

a subdirectory with the code of the error message, and add a `index.md` file that contains the
full description of the problem with potential remediation steps, examples, etc. See the existing
files in that directory for examples of how this is done.

## FAQ

### What if I need a resource not available as a collection?

Please open an issue (directed at the "Configuration" product area) or visit the

}

// Prev returns the Go major release immediately preceding v,
// or v itself if v is the first Go major release (1.0) or not a supported
// Go version.
//
// Examples:
//
//	Prev("1.2") = "1.1"
//	Prev("1.3rc4") = "1.2"
func Prev(x string) string {
	v := gover.Parse(x)
	if gover.CmpInt(v.Minor, "1") <= 0 {
		return v.Major
	}
	return v.Major + "." + gover.DecInt(v.Minor)
}