```sh
cat > example.rego <<EOF
package httpapi.authz

import input

default allow = false

# Allow the root user to perform any action.
allow {
 input.owner == true
}

# All other users may do anything other than call PutObject
allow {
 input.action != "s3:PutObject"
 input.owner == false
}
EOF
```

Then load the policy via OPA's REST API.

```
curl -X PUT --data-binary @example.rego \

/// tip

If you have strict type checks in your editor, mypy, etc, you can declare the function return type as `Any`.

That way you tell the editor that you are intentionally returning anything. But FastAPI will still do the data documentation, validation, filtering, etc. with the `response_model`.

///

### `response_model` Priority { #response-model-priority }

     */
    public InvokerException(@Nullable String message, @Nullable Throwable cause) {
        super(message, cause);
    }

    /**
     * Exception for intentional exit: No message or anything will be displayed, just the
     * carried exit code will be returned from invoker {@link Invoker#invoke(InvokerRequest)} method.
     */
    public static final class ExitException extends InvokerException {

import org.bouncycastle.jce.provider.BouncyCastleProvider
import org.bouncycastle.jsse.provider.BouncyCastleJsseProvider
import org.conscrypt.Conscrypt
import org.hamcrest.BaseMatcher
import org.hamcrest.CoreMatchers.anything
import org.hamcrest.Description
import org.hamcrest.Matcher
import org.hamcrest.StringDescription
import org.hamcrest.TypeSafeMatcher
import org.junit.jupiter.api.Assertions.fail

import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;

public final class RequestBodyCompression {
  /**
   * The Google API KEY for OkHttp recipes. If you're using Google APIs for anything other than
   * running these examples, please request your own client ID!
   *
   * https://console.developers.google.com/project
   */

      label: Testgrid link

  - type: textarea
    id: reason
    attributes:
      label: Reason for failure (if possible)

  - type: textarea
    id: additional
    attributes:
      label: Anything else we need to know?

  - type: textarea
    id: sigs
    attributes:
      label: Relevant SIG(s)
      description: You can identify the SIG from the "prowjob_config_url" on the testgrid dashboard for a test.

# https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/syntax-for-githubs-form-schema
name: Bugs
description: The go command, standard library, or anything else
title: "import/path: issue title"

body:
  - type: markdown
    attributes:
      value: |

    // Wait for the listeners to be called, don't rely on the same-thread exec.
    listenerLatch.await(5, SECONDS);
    assertTrue(task.isDone());
    assertTrue(task.isCancelled());

    // Make sure we didn't run anything.
    assertEquals(1, runLatch.getCount());
  }

  public void testListenerCalledOnCancelFromRunning() throws Exception {
    exec.execute(task);
    runLatch.await();

...then because `description` has a default value, if you **don't return anything** for that field, it will still have that **default value**.

### Model for Output Response Data { #model-for-output-response-data }

If you interact with the docs and check the response, even though the code didn't add anything in one of the `description` fields, the JSON response contains the default value (`null`):

This is different from using an `APIRouter` as a mounted application is completely independent. The OpenAPI and docs from your main application won't include anything from the mounted application, etc.

You can read more about this in the [Advanced User Guide](../advanced/index.md){.internal-link target=_blank}.

## Details { #details }