V41
    }

    /**
     * Gets the identifier of the model from which the problem originated. The identifier is derived from the
     * information that is available at the point the problem occurs and as such merely serves as best effort
     * to provide information to the user to track the problem back to its origin.
     *
     * @return The identifier of the model from which the problem originated or an empty string if unknown, never

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

import org.apache.maven.api.model.Repository;

/**
 * Signals an error when adding a repository to the model resolver.
 *
 * @deprecated use {@link org.apache.maven.api.services.ModelBuilder} instead
 */
@Deprecated(since = "4.0.0")

        <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>packageModelV4=org.apache.maven.api.cli.extensions</param>

 * 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;

import gradlebuild.docs.dsl.source.model.ClassMetaData
import gradlebuild.docs.dsl.source.model.MethodMetaData
import gradlebuild.docs.dsl.source.model.ParameterMetaData
import gradlebuild.docs.dsl.source.model.PropertyMetaData
import gradlebuild.docs.dsl.source.model.TypeMetaData
import gradlebuild.docs.XmlSpecification
import gradlebuild.docs.dsl.docbook.model.ClassDoc
import gradlebuild.docs.dsl.docbook.model.MethodDoc

## Check the Docs

You can verify it in the docs UI at `/docs`:

<div class="screenshot">
<img src="/img/tutorial/request-form-models/image01.png">
</div>

## Forbid Extra Form Fields

In some special use cases (probably not very common), you might want to **restrict** the form fields to only those declared in the Pydantic model. And **forbid** any **extra** fields.

 * under the License.
 */
package org.apache.maven.api.services;

import java.util.List;

import org.apache.maven.api.Service;
import org.apache.maven.api.model.Model;

public interface ModelBuilder extends Service {

    String MODEL_VERSION_4_0_0 = "4.0.0";

    String MODEL_VERSION_4_1_0 = "4.1.0";

 * under the License.
 */
package org.apache.maven.model.building;

import java.net.URL;

import org.apache.maven.building.UrlSource;

/**
 * Wraps an ordinary {@link URL} as a model source.
 *
 *
 * @deprecated instead use {@link UrlSource}
 */
@Deprecated
public class UrlModelSource extends UrlSource implements ModelSource {
    /**
     * Creates a new model source backed by the specified URL.
     *

import org.apache.maven.execution.MavenSession;
import org.apache.maven.model.Repository;
import org.apache.maven.model.building.ModelBuildingException;
import org.apache.maven.model.building.ModelBuildingRequest;
import org.apache.maven.model.building.ModelSource;
import org.apache.maven.model.building.UrlModelSource;
import org.apache.maven.plugin.LegacySupport;
import org.apache.maven.profiles.ProfileManager;

 * 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;

/**
 * Defines events that the model builder fires during construction of the effective model. When a listener encounters
 * errors while processing the event, it can report these problems via {@link ModelBuildingEvent#getProblems()}.