But let's save you the time of reading the full long specification just to find those little pieces of information you need.

Let's use the tools provided by **FastAPI** to handle security.

## How it looks

Let's first just use the code and see how it works, and then we'll come back to understand what's happening.

## Create `main.py`

Copy the example in a file `main.py`:

=== "Python 3.9+"

    ```Python

		Free:   uint64(s.Frsize) * s.Bavail,
		Files:  s.Files,
		Ffree:  s.Ffree,
		FSType: getFSType(s.Type),
	}
	// Check for overflows.
	// https://github.com/minio/minio/issues/8035
	// XFS can show wrong values at times error out
	// in such scenarios.
	if info.Free > info.Total {
		return info, fmt.Errorf("detected free space (%d) > total drive space (%d), fs corruption at (%s). please run 'fsck'", info.Free, info.Total, path)

    // ----------------------------------------------------------------------
    //
    // p1 inherits from p0
    // p0 inherits from super model
    //
    // or we can show it graphically as:
    //
    // p1 ---> p0 --> super model
    //
    // ----------------------------------------------------------------------

    @Test
    void testDependencyManagement() throws Exception {

    // ----------------------------------------------------------------------
    //
    // p1 inherits from p0
    // p0 inherits from super model
    //
    // or we can show it graphically as:
    //
    // p1 ---> p0 --> super model
    //
    // ----------------------------------------------------------------------

    @Test
    void testDependencyManagement() throws Exception {

But you can disable it by setting `syntaxHighlight` to `False`:

```Python hl_lines="3"
{!../../../docs_src/configure_swagger_ui/tutorial001.py!}
```

...and then Swagger UI won't show the syntax highlighting anymore:

<img src="/img/tutorial/extending-openapi/image03.png">

## Change the Theme

  repeated RuleWithOperations rules = 3;

  // FailurePolicy defines how unrecognized errors from the admission endpoint are handled -
  // allowed values are Ignore or Fail. Defaults to Fail.
  // +optional
  optional string failurePolicy = 4;

  // matchPolicy defines how the "rules" list is used to match incoming requests.
  // Allowed values are "Exact" or "Equivalent".
  //

import org.apache.maven.api.annotations.Nonnull;
import org.apache.maven.api.model.PluginContainer;

/**
 * Interface representing a Maven project packaging.
 * <p>
 * TODO: define how to plug in new packaging definitions using the SPI.
 *   the packaging are currently defined by Maven 3 {@code Provider<LifecycleMapping>}
 *
 * @since 4.0.0
 */
@Experimental
@Immutable

    //
    // p4 inherits from p3
    // p3 inherits from p2
    // p2 inherits from p1
    // p1 inherits from p0
    // p0 inherits from super model
    //
    // or we can show it graphically as:
    //
    // p4 ---> p3 ---> p2 ---> p1 ---> p0 --> super model
    //
    // ----------------------------------------------------------------------

    @Test

In most cases you would (and should) have a "termination proxy" handling HTTPS for you on top, this will depend on how you deploy your application, your provider might do this for you, or you might need to set it up yourself.

!!! tip

          name: coverage
          path: coverage
      - run: pip install coverage[toml]
      - run: ls -la coverage
      - run: coverage combine coverage
      - run: coverage report
      - run: coverage html --show-contexts --title "Coverage for ${{ github.sha }}"
      - name: Store coverage HTML
        uses: actions/upload-artifact@v3
        with:
          name: coverage-html
          path: htmlcov