* Uses https://junit.org/junit4/[JUnit 4] for testing
* Has directories in the conventional locations for source code
* Contains a sample class and unit test, if there are no existing source or test files

Alternative test framework can be specified by supplying a `--test-framework` argument value. To use a different test framework, execute one of the following commands:

* Show a **clear error** for the client when the data is not valid
* **Document** the parameter in the OpenAPI schema *path operation* (so it will show up in the **automatic docs UI**)

## Alternative (old) `Query` as the default value

| 6  | `@deprecated` | Adds a comment indicating that this API should no longer be used               | Make sure to have an alternative API linked                                                                                                                                                                        |

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* <a href="https://github.com/Rebilly/ReDoc" class="external-link" target="_blank"><strong>ReDoc</strong></a> ile beraber alternatif API dokümantasyonu.

![ReDoc](https://fastapi.tiangolo.com/img/index/index-06-redoc-02.png)

### Sadece modern Python

====

If this method is called and that a project or plugin declares rules, a warning will be issued.
You can make this a failure instead by using this alternative:

.Enforcing rules declared in settings
====
include::sample[dir="snippets/dependencyManagement/customizingResolution-metadataRule/kotlin",files="settings.gradle.kts[tags=enforce-settings]"]

A common tool is <a href="https://openapi-generator.tech/" class="external-link" target="_blank">OpenAPI Generator</a>.

If you are building a **frontend**, a very interesting alternative is <a href="https://github.com/hey-api/openapi-ts" class="external-link" target="_blank">openapi-ts</a>.

## Client and SDK Generators - Sponsor

* `summary`: Short description for the example.
* `description`: A long description that can contain Markdown text.
* `value`: This is the actual example shown, e.g. a `dict`.
* `externalValue`: alternative to `value`, a URL pointing to the example. Although this might not be supported by as many tools as `value`.

You can use it like this:

=== "Python 3.10+"

    ```Python hl_lines="23-49"

import static org.gradle.jvm.toolchain.internal.LocationListInstallationSupplier.JAVA_INSTALLATIONS_PATHS_PROPERTY;

/**
 * Allows the tests to get hold of an alternative Java installation when needed.
 */
public abstract class AvailableJavaHomes {

    private static final Supplier<List<JvmInstallationMetadata>> INSTALLATIONS = Suppliers.memoize(AvailableJavaHomes::discoverLocalInstallations);

!!! warning
    This is a more advanced use case. Feel free to skip it.

By default, **FastAPI** will create a `server` in the OpenAPI schema with the URL for the `root_path`.

But you can also provide other alternative `servers`, for example if you want *the same* docs UI to interact with a staging and production environments.

			return err
		} else {
			canReadCertAndKey = canRead
		}
	}

	if !canReadCertAndKey {
		// add either the bind address or localhost to the valid alternates
		if s.BindAddress.IsUnspecified() {
			alternateDNS = append(alternateDNS, "localhost")
		} else {
			alternateIPs = append(alternateIPs, s.BindAddress)
		}