/**
 * Signals an error when resolving the path to an external model.
 *
 * @deprecated use {@link org.apache.maven.api.services.ModelBuilder} instead
 */
@Deprecated(since = "4.0.0")
public class UnresolvableModelException extends Exception {

    /**
     * The group id of the unresolvable model.
     */
    private final String groupId;

    /**
     * The artifact id of the unresolvable model.
     */

                .artifactId("artifact")
                .version("0")
                .build();

        UnresolvableModelException e = assertThrows(
                UnresolvableModelException.class,
                () -> newModelResolver().resolveModel(parent, new AtomicReference<>()),
                "Expected 'UnresolvableModelException' not thrown.");
        assertNotNull(e.getMessage());

     * @return The source of the requested POM, never {@code null}.
     * @throws UnresolvableModelException If the POM could not be resolved from any configured repository.
     */
    ModelSource resolveModel(String groupId, String artifactId, String version) throws UnresolvableModelException;

    /**
     * Tries to resolve the POM for the specified parent coordinates possibly updating {@code parent}.

        public ModelSource resolveModel(String groupId, String artifactId, String version)
                throws UnresolvableModelException {
            return null;
        }

        @Override
        public ModelSource resolveModel(Parent parent, AtomicReference<Parent> modified)
                throws UnresolvableModelException {
            return null;
        }

        @Override

public interface WorkspaceModelResolver {

    Model resolveRawModel(String groupId, String artifactId, String versionConstraint)
            throws UnresolvableModelException;

    Model resolveEffectiveModel(String groupId, String artifactId, String versionConstraint)
            throws UnresolvableModelException;

            throw new UnresolvableModelException(e.getMessage(), groupId, artifactId, version, e);
        }

        return new ArtifactModelSource(pomArtifact.getPath(), groupId, artifactId, version);
    }

    @Override
    public ModelSource resolveModel(final Parent parent, final AtomicReference<Parent> modified)
            throws UnresolvableModelException {
        try {

import org.apache.maven.model.building.ModelBuildingException;
import org.apache.maven.model.building.ModelBuildingRequest;
import org.apache.maven.model.building.ModelProblem;
import org.apache.maven.model.resolution.UnresolvableModelException;
import org.apache.maven.plugin.LegacySupport;
import org.apache.maven.project.DefaultProjectBuildingRequest;
import org.apache.maven.project.MavenProject;
import org.apache.maven.project.ProjectBuilder;

import org.apache.maven.model.profile.ProfileSelector;
import org.apache.maven.model.resolution.InvalidRepositoryException;
import org.apache.maven.model.resolution.ModelResolver;
import org.apache.maven.model.resolution.UnresolvableModelException;
import org.apache.maven.model.resolution.WorkspaceModelResolver;
import org.apache.maven.model.superpom.SuperPomProvider;
import org.apache.maven.model.v4.MavenTransformer;

import org.apache.maven.model.building.ModelBuildingResult;
import org.apache.maven.model.building.ModelProblem;
import org.apache.maven.model.building.ModelProblemUtils;
import org.apache.maven.model.resolution.UnresolvableModelException;
import org.codehaus.plexus.util.StringUtils;
import org.eclipse.aether.RepositoryEvent;
import org.eclipse.aether.RepositoryEvent.EventType;
import org.eclipse.aether.RepositoryException;