<annotation>com.google.common.hash.IgnoreJRERequirement</annotation>
              <annotation>com.google.common.io.IgnoreJRERequirement</annotation>
              <annotation>com.google.common.math.IgnoreJRERequirement</annotation>
              <annotation>com.google.common.primitives.IgnoreJRERequirement</annotation>
              <annotation>com.google.common.reflect.IgnoreJRERequirement</annotation>

              <annotation>com.google.common.hash.IgnoreJRERequirement</annotation>
              <annotation>com.google.common.io.IgnoreJRERequirement</annotation>
              <annotation>com.google.common.math.IgnoreJRERequirement</annotation>
              <annotation>com.google.common.primitives.IgnoreJRERequirement</annotation>
              <annotation>com.google.common.reflect.IgnoreJRERequirement</annotation>

And tools will also be happy because both `RedirectResponse` and `JSONResponse` are subclasses of `Response`, so the type annotation is correct.

### Annotate a Response Subclass { #annotate-a-response-subclass }

You can also use a subclass of `Response` in the type annotation:

7. Here the `response_model` is using a type annotation of a list of `Author` dataclasses.

    Again, you can combine `dataclasses` with standard type annotations.

8. Notice that this *path operation function* uses regular `def` instead of `async def`.

    As always, in FastAPI you can combine `def` and `async def` as needed.

			<groupId>org.glassfish.jersey.core</groupId>
			<artifactId>jersey-common</artifactId>
			<version>${jersey.common.version}</version>
			<exclusions>
				<exclusion>
					<groupId>jakarta.annotation</groupId>
					<artifactId>jakarta.annotation-api</artifactId>
				</exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>jakarta.activation</groupId>
			<artifactId>jakarta.activation-api</artifactId>

			<artifactId>httpclient-cache</artifactId>
			<version>${httpcomponents.version}</version>
		</dependency>
		<dependency>
			<groupId>jakarta.annotation</groupId>
			<artifactId>jakarta.annotation-api</artifactId>
			<version>${jakarta.annotation.api.version}</version>
		</dependency>
		<dependency>
			<groupId>org.codelibs</groupId>
			<artifactId>nekohtml</artifactId>

In this example we pass `Union[PlaneItem, CarItem]` as the value of the argument `response_model`.

Because we are passing it as a **value to an argument** instead of putting it in a **type annotation**, we have to use `Union` even in Python 3.10.

If it was in a type annotation we could have used the vertical bar, as:

```Python
some_variable: PlaneItem | CarItem
```

      <artifactId>jline-terminal-ffm</artifactId>
    </dependency>

    <!-- (legacy) DI annotations -->
    <dependency>
      <groupId>javax.inject</groupId>
      <artifactId>javax.inject</artifactId>
    </dependency>
    <dependency>
      <groupId>javax.annotation</groupId>
      <artifactId>javax.annotation-api</artifactId>
    </dependency>

    <!-- DI Runtime -->
    <dependency>

**FastAPI** calls the `CommonQueryParams` class. This creates an "instance" of that class and the instance will be passed as the parameter `commons` to your function.

## Type annotation vs `Depends` { #type-annotation-vs-depends }

Notice how we write `CommonQueryParams` twice in the above code:

//// tab | Python 3.8+

```Python
commons: Annotated[CommonQueryParams, Depends(CommonQueryParams)]
```

## Declare `Cookie` parameters { #declare-cookie-parameters }

Then declare the cookie parameters using the same structure as with `Path` and `Query`.

You can define the default value as well as all the extra validation or annotation parameters:

{* ../../docs_src/cookie_params/tutorial001_an_py310.py hl[9] *}

/// note | Technical Details

`Cookie` is a "sister" class of `Path` and `Query`. It also inherits from the same common `Param` class.