/**
     * Creates an empty request.
     */
    public DefaultModelBuildingRequest() {}

    /**
     * Creates a shallow copy of the specified request.
     *
     * @param request The request to copy, must not be {@code null}.
     */
    public DefaultModelBuildingRequest(ModelBuildingRequest request) {
        setPomFile(request.getPomFile());

package org.apache.maven.project.validation;

import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;

import org.apache.maven.model.Model;
import org.apache.maven.model.building.DefaultModelBuildingRequest;
import org.apache.maven.model.building.ModelBuildingRequest;
import org.apache.maven.model.building.ModelProblem;
import org.apache.maven.model.building.ModelProblemCollector;

        Map<String, String> props = new HashMap<>();
        props.put("aa", "${bb}");
        props.put("bb", "${aa}");
        DefaultModelBuildingRequest request = new DefaultModelBuildingRequest();

        Model model = new Model(
                org.apache.maven.api.model.Model.newBuilder().properties(props).build());

    @Test
    public void testCycleInImports() throws Exception {
        ModelBuilder builder = new DefaultModelBuilderFactory().newInstance();
        assertNotNull(builder);

        DefaultModelBuildingRequest request = new DefaultModelBuildingRequest();
        request.setModelSource(new StringModelSource(BASE1));
        request.setModelResolver(new CycleInImportsResolver());

import java.io.Serial;
import java.util.List;
import java.util.Properties;
import java.util.function.UnaryOperator;

import org.apache.maven.model.Model;
import org.apache.maven.model.building.DefaultModelBuildingRequest;
import org.apache.maven.model.building.ModelBuildingRequest;
import org.apache.maven.model.building.SimpleProblemCollector;
import org.apache.maven.model.interpolation.DefaultModelVersionProcessor;

        return result;
    }

    @Override
    public Result<? extends Model> buildRawModel(File pomFile, int validationLevel, boolean locationTracking) {
        final ModelBuildingRequest request = new DefaultModelBuildingRequest()
                .setValidationLevel(validationLevel)
                .setLocationTracking(locationTracking);
        final DefaultModelProblemCollector collector =