*
     * @return The message describing this problem, never {@code null}.
     */
    String getMessage();

    /**
     * Gets the severity level of this problem.
     *
     * @return The severity level of this problem, never {@code null}.
     */
    Severity getSeverity();

 */
@Deprecated(since = "4.0.0")
public interface SettingsProblemCollector {

    /**
     * Adds the specified problem.
     *
     * @param severity The severity of the problem, must not be {@code null}.
     * @param message The detail message of the problem, may be {@code null}.
     * @param line The one-based index of the line containing the problem or {@code -1} if unknown.

 * be used.
 * <p>
 * This interface provides methods for logging messages at different severity levels
 * and supports logging with or without associated exceptions.
 *
 * @since 4.0.0
 */
@Experimental
public interface Logger {

    /**
     * Represents the severity levels for log messages.
     */
    enum Level {
        DEBUG,
        INFO,
        WARN,
        ERROR
    }

     */
    Settings getEffectiveSettings();

    /**
     * Gets the problems that were encountered during the settings building. Note that only problems of severity
     * {@link SettingsProblem.Severity#WARNING} and below are reported here. Problems with a higher severity level cause
     * the settings builder to fail with a {@link SettingsBuildingException}.
     *

    }

    @Override
    public void add(SettingsProblem.Severity severity, String message, int line, int column, Exception cause) {
        if (line <= 0 && column <= 0 && cause instanceof SettingsParseException e) {
            line = e.getLineNumber();
            column = e.getColumnNumber();
        }

        SettingsProblem problem = new DefaultSettingsProblem(message, severity, source, line, column, cause);

        problems.add(problem);

     */
    List<Profile> getActiveExternalProfiles();

    /**
     * Gets the problems that were encountered during the model building. Note that only problems of severity
     * {@link ModelProblem.Severity#WARNING} and below are reported here. Problems with a higher severity level cause
     * the model builder to fail with a {@link ModelBuildingException}.
     *

### Security vulnerabilities

Do not report security vulnerabilities to the public issue tracker. Follow our [Security Vulnerability Disclosure Policy](https://github.com/gradle/gradle/security/policy).

### Follow the Code of Conduct

                @Deprecated
                void method();
            }
        """

        then:
        incubatingMissingRule.maybeViolation(jApiType).severity == Severity.error
        sinceMissingRule.maybeViolation(jApiType).severity == Severity.error

        where:
        apiElement  | jApiTypeName
        'interface' | 'jApiClassifier'
        'method'    | 'jApiMethod'
        'field'     | 'jApiField'

    }

    private static class SimpleProblemCollector implements SettingsProblemCollector {

        List<String> messages = new ArrayList<>();

        @Override
        public void add(Severity severity, String message, int line, int column, Exception cause) {
            messages.add(message);
        }
    }

     */
    @Nonnull
    Optional<Boolean> showErrors();

    /**
     * Returns the severity level at which the build should fail.
     *
     * @return an {@link Optional} containing the fail-on-severity string, or empty if not set
     */
    @Nonnull
    Optional<String> failOnSeverity();

    /**
     * Indicates whether to run in non-interactive mode.