Essas faturas terão um `id`, `title` (opcional), `customer` e `total`.

O usuário da sua API (um desenvolvedor externo) criará uma fatura na sua API com um request POST.

Então sua API irá (vamos imaginar):

* Enviar a fatura para algum cliente do desenvolvedor externo.
* Coletar o dinheiro.
* Enviar a notificação de volta para o usuário da API (o desenvolvedor externo).

     * <li>Empty values for directives</li>
     * </ul>
     *
     * <p>Only fatal I/O errors will cause parsing to fail with an exception.</p>
     *
     * @param stream the input stream to parse
     * @param charsetName the character encoding to use
     * @return the parsed RobotsTxt object, or null if disabled
     * @throws RobotsTxtException if a fatal I/O error occurs
     */

    @Override
    public boolean isFatalEnabled() {
        return logger.isLoggable(Level.SEVERE);
    }

    @Override
    public void fatal(final String message) {
        logger.logp(Level.SEVERE, sourceClass, null, message);
    }

    @Override
    public void fatal(final String message, final Throwable t) {
        logger.logp(Level.SEVERE, sourceClass, null, message, t);
    }

    @Override

                    message.append(" -> ");
                }
                message.append(parentData.getId());

                problems.add(new ModelProblemCollectorRequest(ModelProblem.Severity.FATAL, ModelProblem.Version.BASE)
                        .setMessage(message.toString()));

                throw problems.newModelBuildingException();
            } else {
                currentData = parentData;

     * Returns {@code true} if there is at least one problem collected with severity equal or more severe than
     * {@link org.apache.maven.api.services.BuilderProblem.Severity#FATAL}.
     */
    default boolean hasFatalProblems() {
        return hasProblemsFor(BuilderProblem.Severity.FATAL);
    }

    /**
     * Returns {@code true} if there is at least one problem collected with severity equal or more severe than
     * passed in severity.

            }
        } catch (ToolchainsParseException e) {
            problems.add(
                    Problem.Severity.FATAL,
                    "Non-parseable toolchains " + toolchainsSource.getLocation() + ": " + e.getMessage(),
                    e.getLineNumber(),
                    e.getColumnNumber(),
                    e);

        }
    }

    public boolean hasFatalErrors() {
        return severities.contains(ModelProblem.Severity.FATAL);
    }

    public boolean hasErrors() {
        return severities.contains(ModelProblem.Severity.ERROR) || severities.contains(ModelProblem.Severity.FATAL);
    }

    @Override
    public List<ModelProblem> getProblems() {
        return problems;
    }

        DefaultProblem problem = new DefaultProblem(null, null, null, -1, -1, null);
        assertEquals(Severity.ERROR, problem.getSeverity());

        problem = new DefaultProblem(null, Severity.FATAL, null, -1, -1, null);
        assertEquals(Severity.FATAL, problem.getSeverity());

        problem = new DefaultProblem(null, Severity.ERROR, null, -1, -1, null);
        assertEquals(Severity.ERROR, problem.getSeverity());

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

    /**
     * The different severity levels for a problem, in decreasing order.
     */
    enum Severity {
        FATAL, //
        ERROR, //
        WARNING //
    }

    /**
     * Gets the hint about the source of the problem. While the syntax of this hint is unspecified and depends on the

 *    to use `H2_PRIOR_KNOWLEDGE` but the URL's scheme is `https:`.
 *  * Preemptive proxy authentication failed.
 *
 * Planning failures are not necessarily fatal. For example, even if we can't DNS lookup the first
 * proxy in a list, looking up a subsequent one may succeed.
 */
internal class FailedPlan(
  e: Throwable,
) : RoutePlanner.Plan {