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

/**
 * Describes a problem that was encountered during model building. A problem can either be an exception that was thrown
 * 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
     */

     * @return The formatted problem location or an empty string if unknown, never {@code null}.
     */
    public static String formatLocation(ModelProblem problem, String projectId) {
        StringBuilder buffer = new StringBuilder(256);

        if (!problem.getModelId().equals(projectId)) {
            buffer.append(problem.getModelId());
            if (!problem.getSource().isEmpty()) {

    }

    @Override
    public void add(ModelProblem problem) {
        problems.add(problem);

        severities.add(problem.getSeverity());
    }

    public void addAll(Collection<ModelProblem> problems) {
        this.problems.addAll(problems);

        for (ModelProblem problem : problems) {
            severities.add(problem.getSeverity());
        }
    }

    @Override

                sb.append(problem.getSeverity());
                sb.append("] ");
                sb.append(problem.getMessage());
                String loc = Stream.of(
                                problem.getModelId().equals(modelId) ? problem.getModelId() : "",
                                problem.getModelId().equals(modelId) ? problem.getSource() : "",

        private final SettingsProblem problem;

        MappedBuilderProblem(SettingsProblem problem) {
            this.problem = problem;
        }

        @Override
        public String getSource() {
            return problem.getSource();
        }

        @Override
        public int getLineNumber() {
            return problem.getLineNumber();
        }

        @Override

        this.source = source;
    }

    @Override
    public void add(Problem.Severity severity, String message, int line, int column, Exception cause) {
        Problem problem = new DefaultProblem(message, severity, source, line, column, cause);

        problems.add(problem);
    }

                }

                private BuilderProblem toProblem(ModelProblem problem) {
                    return new BuilderProblem() {
                        @Override
                        public String getSource() {
                            return problem.getSource();
                        }

                        @Override

        - Typo (please open a PR instead)
    validations:
      required: true
  - type: textarea
    id: description
    attributes:
      label: Problem description
      description: |
        Please describe the problem as concisely as possible.
    validations:
      required: true
  - type: textarea
    id: context
    attributes:
      label: Context (optional)
      description: |

import org.apache.maven.api.model.Model;
import org.apache.maven.api.services.ModelProblem;

/**
 * Describes a problem that was encountered during model building. A problem can either be an exception that was thrown
 * 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 class DefaultModelProblem implements ModelProblem {

    private final String source;

 */
package org.apache.maven.building;

/**
 * Describes a problem that was encountered during settings building. A problem can either be an exception that was
 * thrown or a simple string message. In addition, a problem carries a hint about its source, e.g. the settings file
 * that exhibits the problem.
 *
 */
class DefaultProblem implements Problem {

    private final String source;

    private final int lineNumber;