*
     * @param settings The settings to validate, must not be {@code null}.
     * @return The list of problems that were encountered, must not be {@code null}.
     */
    @Nonnull
    default List<BuilderProblem> validate(@Nonnull Settings settings) {
        return validate(settings, false);
    }

    /**
     * Validate the specified settings.
     *

 * 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 {

    /**
     * Version
     */
    enum Version {
        // based on ModeBuildingResult.validationLevel
        BASE,
        V20,
        V30,
        V31,
        V40,
        V41

     *
     * @return the problems that were encountered during the project building, can be empty but never {@code null}
     */
    @Nonnull
    Collection<BuilderProblem> getProblems();

    /**
     * Gets the result of the dependency resolution for the project.
     *
     * @return the result of the dependency resolution for the project
     */
    @Nonnull

import org.apache.maven.api.cli.mvn.MavenInvoker;
import org.apache.maven.api.cli.mvn.MavenInvokerRequest;
import org.apache.maven.api.cli.mvn.MavenOptions;
import org.apache.maven.api.services.BuilderProblem;
import org.apache.maven.api.services.SettingsBuilderRequest;
import org.apache.maven.api.services.SettingsBuilderResult;
import org.apache.maven.api.services.Source;
import org.apache.maven.api.services.ToolchainsBuilder;

import org.apache.maven.api.cli.InvokerException;
import org.apache.maven.api.cli.InvokerRequest;
import org.apache.maven.api.cli.Logger;
import org.apache.maven.api.cli.Options;
import org.apache.maven.api.services.BuilderProblem;
import org.apache.maven.api.services.Interpolator;
import org.apache.maven.api.services.Lookup;
import org.apache.maven.api.services.MavenException;
import org.apache.maven.api.services.MessageBuilder;