///

## Cookies with a Pydantic Model { #cookies-with-a-pydantic-model }

Declare the **cookie** parameters that you need in a **Pydantic model**, and then declare the parameter as `Cookie`:

{* ../../docs_src/cookie_param_models/tutorial001_an_py310.py hl[9:12,16] *}

**FastAPI** will **extract** the data for **each field** from the **cookies** received in the request and give you the Pydantic model you defined.

                                "application/json": {
                                    "schema": {
                                        "title": "Response Response Model List Of Model No Annotation Response Model List Of Model No Annotation Get",
                                        "type": "array",
                                        "items": {"$ref": "#/components/schemas/User"},
                                    }

import org.apache.maven.api.model.Build;
import org.apache.maven.api.model.Dependency;
import org.apache.maven.api.model.DependencyManagement;
import org.apache.maven.api.model.DeploymentRepository;
import org.apache.maven.api.model.Extension;
import org.apache.maven.api.model.Model;
import org.apache.maven.api.model.Plugin;
import org.apache.maven.api.model.Profile;
import org.apache.maven.api.model.ReportPlugin;

# Header Parameter Models { #header-parameter-models }

If you have a group of related **header parameters**, you can create a **Pydantic model** to declare them.

This would allow you to **re-use the model** in **multiple places** and also to declare validations and metadata for all the parameters at once. 😎

/// note

This is supported since FastAPI version `0.115.0`. 🤓

///

     *
     * This method will be called on each raw model being loaded,
     * just before validation.
     *
     * @param model the input model
     * @return the transformed model, or the input model if no transformation is needed
     * @throws ModelTransformerException
     */
    @Nonnull
    default Model transformRawModel(@Nonnull Model model) throws ModelTransformerException {
        return model;
    }

    /**

              <!--              <exclude>org.apache.maven.model.inheritance.DefaultInheritanceAssembler</exclude>-->

    public Model getModel() {
        return model;
    }

    /**
     * Sets the model being wrapped.
     *
     * @param model The model, may be {@code null}.
     */
    public void setModel(Model model) {
        this.model = model;
    }

    /**
     * Gets the raw model being wrapped.
     *
     * @return The raw model or {@code null} if not set.
     */
    public Model getRawModel() {

              <velocityBasedir>${project.basedir}/../../src/mdo</velocityBasedir>
              <version>2.0.0</version>
              <models>
                <model>src/main/mdo/plugin.mdo</model>
              </models>
              <templates>
                <template>model.vm</template>
              </templates>
              <params>
                <param>packageModelV4=org.apache.maven.api.plugin.descriptor</param>

 * The maven super model

 * how parent poms are processed

 * the order in which elements in the POM are overridden

 * minimum element-set for a valid project pom


Maven super model

 Inheritance is recursive in Maven but there is a special model which is the implicit super parent in the lineage
 of models you may specify:

    /**
     * Gets the file model.
     *
     * @return the file model, never {@code null}.
     */
    @Nonnull
    Model getFileModel();

    /**
     * Gets the file model + build pom transformation, without inheritance nor interpolation.
     *
     * @return The raw model, never {@code null}.
     */
    @Nonnull
    Model getRawModel();

    /**
     * Gets the effective model of the parent POM.
     *