* under the License.
 */
package org.apache.maven.toolchain.merge;

import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

import org.apache.maven.toolchain.model.PersistedToolchains;
import org.apache.maven.toolchain.model.ToolchainModel;
import org.codehaus.plexus.util.xml.Xpp3Dom;

/**
 *
 * @since 3.2.4
 * @deprecated since 4.0.0, use {@link org.apache.maven.toolchain.v4.MavenToolchainsMerger} instead

 * limitations under the License.
 */


@file:JvmName("JapicmpExtensions")

package gradlebuild.binarycompatibility

import japicmp.model.JApiBehavior
import japicmp.model.JApiClass
import japicmp.model.JApiCompatibility
import japicmp.model.JApiField


internal
val JApiCompatibility.jApiClass: JApiClass
    get() = when (this) {
        is JApiClass -> this

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.model.building;

import org.apache.maven.model.io.ModelReader;
import org.apache.maven.model.locator.ModelLocator;

/**
 * ModelProcessor
 *
 * @deprecated use {@code org.apache.maven.api.services.ModelBuilder} instead
 */
@Deprecated(since = "4.0.0")

import org.apache.maven.artifact.versioning.VersionRange;
import org.apache.maven.bridge.MavenRepositorySystem;
import org.apache.maven.model.Dependency;
import org.apache.maven.model.Plugin;
import org.apache.maven.model.Repository;
import org.apache.maven.model.io.ModelReader;
import org.apache.maven.project.artifact.ArtifactWithDependencies;
import org.apache.maven.settings.Mirror;
import org.apache.maven.settings.Proxy;

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.model.building;

import java.io.File;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Paths;

import org.apache.maven.api.model.Model;
import org.apache.maven.model.v4.MavenStaxReader;
import org.codehaus.plexus.util.xml.Xpp3Dom;
import org.junit.jupiter.api.Test;

    router = APIRouter()

    @app.post("/", response_model=list[Item], responses={404: {"model": list[Message]}})
    def post_root(item1: Item, item2: Item):
        return item1, item2  # pragma: nocover

    @router.post(
        "/router", response_model=list[Item], responses={404: {"model": list[Message]}}
    )
    def post_router(item1: Item, item2: Item):
        return item1, item2  # pragma: nocover

import jetbrains.buildServer.configs.kotlin.DslContext
import jetbrains.buildServer.configs.kotlin.buildSteps.GradleBuildStep
import model.CIBuildModel
import model.JsonBasedGradleSubprojectProvider
import model.PerformanceTestCoverage
import model.PerformanceTestType
import model.Stage
import model.StageName
import org.junit.jupiter.api.Assertions.assertEquals
import org.junit.jupiter.api.Test
import java.io.File

When you create a **FastAPI** *path operation* you can normally return any data from it: a `dict`, a `list`, a Pydantic model, a database model, etc.

If you declare a [Response Model](../tutorial/response-model.md) FastAPI will use it to serialize the data to JSON, using Pydantic.

If you don't declare a response model, FastAPI will use the `jsonable_encoder` explained in [JSON Compatible Encoder](../tutorial/encoder.md) and put it in a `JSONResponse`.

			stmt.Context, _ = context.WithTimeout(stmt.Context, db.DefaultContextTimeout)
		}
	}

	// assign model values
	if stmt.Model == nil {
		stmt.Model = stmt.Dest
	} else if stmt.Dest == nil {
		stmt.Dest = stmt.Model
	}

	// parse model values
	if stmt.Model != nil {

### `orjson` or Response Model { #orjson-or-response-model }

If what you are looking for is performance, you are probably better off using a [Response Model](../tutorial/response-model.md) than an `orjson` response.