<artifactId>modello-maven-plugin</artifactId>
        <configuration>
          <version>1.2.0</version>
          <models>
            <model>src/main/mdo/core-extensions.mdo</model>
          </models>
          <templates>
            <template>model.vm</template>
          </templates>
          <params>
            <param>locationTracking=true</param>

    //
    // 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
    void testProjectInheritance() throws Exception {

 * limitations under the License.
 */

package gradlebuild.docs.dsl.docbook;

import gradlebuild.docs.dsl.docbook.model.ClassDoc;
import gradlebuild.docs.dsl.docbook.model.ClassExtensionDoc;
import gradlebuild.docs.dsl.docbook.model.MethodDoc;
import org.w3c.dom.Document;
import org.w3c.dom.Element;

import java.util.Collection;

class MethodsRenderer implements ClassDocMemberRenderer {

 * limitations under the License.
 */

package gradlebuild.docs.dsl.docbook;

import gradlebuild.docs.dsl.docbook.model.ClassDoc;
import gradlebuild.docs.dsl.docbook.model.ClassExtensionDoc;
import gradlebuild.docs.dsl.docbook.model.PropertyDoc;
import org.w3c.dom.Document;
import org.w3c.dom.Element;

import java.util.Collection;

class PropertiesRenderer implements ClassDocMemberRenderer {

import gradlebuild.binarycompatibility.jApiClass
import gradlebuild.binarycompatibility.simpleName
import japicmp.model.JApiClass
import japicmp.model.JApiCompatibility
import japicmp.model.JApiConstructor
import japicmp.model.JApiField
import japicmp.model.JApiMethod


private
typealias PredicateVisitor = GenericVisitorAdapter<Boolean, Unit?>

private

import gradlebuild.docs.XmlSpecification
import gradlebuild.docs.dsl.docbook.model.ClassDoc
import gradlebuild.docs.dsl.docbook.model.ExtraAttributeDoc
import gradlebuild.docs.dsl.docbook.model.PropertyDoc
import gradlebuild.docs.dsl.source.model.ClassMetaData
import gradlebuild.docs.dsl.source.model.PropertyMetaData
import gradlebuild.docs.dsl.source.model.TypeMetaData

class ClassDocPropertiesBuilderTest extends XmlSpecification {

        <artifactId>modello-maven-plugin</artifactId>
        <configuration>
          <version>1.2.0</version>
          <models>
            <model>../../api/maven-api-cli/src/main/mdo/core-extensions.mdo</model>
          </models>
          <templates>
            <template>reader-stax.vm</template>
            <template>writer-stax.vm</template>
          </templates>
          <params>

Then we use the request directly, and extract the body as `bytes`. This means that FastAPI won't even try to parse the request payload as JSON.

And then in our code, we parse that YAML content directly, and then we are again using the same Pydantic model to validate the YAML content:

///

## Embed a single body parameter { #embed-a-single-body-parameter }

Let's say you only have a single `item` body parameter from a Pydantic model `Item`.

By default, **FastAPI** will then expect its body directly.

But if you want it to expect a JSON with a key `item` and inside of it the model contents, as it does when you declare extra body parameters, you can use the special `Body` parameter `embed`:

```Python

        app = FastAPI()

        @app.get("/", responses={"500": {"model": NonPydanticModel}})
        def read_root():
            pass  # pragma: nocover


def test_invalid_response_model_sub_type_in_responses_raises():
    with pytest.raises(FastAPIError):
        app = FastAPI()

        @app.get("/", responses={"500": {"model": list[NonPydanticModel]}})
        def read_root():