* or a simple string message. In addition, a problem carries a hint about its source, e.g. the POM file that exhibits
 * the problem.
 *
 */
public interface ModelProblem extends BuilderProblem {

    /**
     * Enumeration of model versions that can be validated.
     * These versions correspond to different levels of validation that can be applied

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;
import org.apache.maven.model.building.ModelProblemCollectorRequest;

/**
 */
@Deprecated
@Named
@Singleton

import org.apache.maven.internal.impl.DefaultSession;
import org.apache.maven.internal.impl.InternalMavenSession;
import org.apache.maven.model.building.ModelBuildingException;
import org.apache.maven.model.building.ModelProblem;
import org.apache.maven.repository.RepositorySystem;
import org.apache.maven.repository.internal.MavenRepositorySystemUtils;
import org.apache.maven.session.scope.internal.SessionScope;

import java.util.List;
import java.util.Map;
import java.util.Properties;

import org.apache.maven.model.Activation;
import org.apache.maven.model.Profile;
import org.apache.maven.model.building.ModelProblem;
import org.apache.maven.model.profile.DefaultProfileActivationContext;
import org.apache.maven.model.profile.ProfileSelector;
import org.apache.maven.profiles.activation.ProfileActivationException;

     *
     * @return the problem collector that collected problems encountered during the project building
     */
    @Nonnull
    ProblemCollector<ModelProblem> getProblemCollector();

    /**
     * Gets the children of this result.
     *
     * @return the children of this result, can be empty but never {@code null}
     */
    @Nonnull