*
     * @return The dependency graph or {@code null} if not available.
     */
    DependencyNode getDependencyGraph();

    /**
     * Gets the transitive dependencies of the project that were not excluded by
     * {@link DependencyResolutionRequest#getResolutionFilter()}. This list is a union of the results from
     * {@link #getResolvedDependencies()} and {@link #getUnresolvedDependencies()}.
     *

## *Pfadoperation* in der Dokumentation deprecaten – OpenAPI { #documentation-deprecate-a-path-operation-openapi }

  First came ten soldiers carrying clubs; these were all shaped
like the three gardeners, oblong and flat, with their hands and
feet at the corners:  next the ten courtiers; these were
ornamented all over with diamonds, and walked two and two, as the
soldiers did.  After these came the royal children; there were
ten of them, and the little dears came jumping merrily along hand
in hand, in couples:  they were all ornamented with hearts.  Next

    /**
     * Gets the problems that were encountered during the settings building. Note that only problems of severity
     * {@link BuilderProblem.Severity#WARNING} and below are reported here. Problems with a higher severity level cause
     * the settings builder to fail with a {@link SettingsBuilderException}.
     *
     * @return the problems that were encountered during the settings building, can be empty but never {@code null}

    /**
     * Gets the problems that were encountered during the settings building. Note that only problems of severity
     * {@link BuilderProblem.Severity#WARNING} and below are reported here. Problems with a higher severity level cause
     * the settings builder to fail with a {@link ToolchainsBuilderException}.
     *
     * @return the problems that were encountered during the settings building, can be empty but never {@code null}

Es ist auch so gestaltet, dass es als zukünftige Referenz dient, sodass Sie jederzeit zurückkommen und genau das sehen, was Sie benötigen.

## Den Code ausführen { #run-the-code }

Alle Codeblöcke können kopiert und direkt verwendet werden (es sind tatsächlich getestete Python-Dateien).

Um eines der Beispiele auszuführen, kopieren Sie den Code in eine Datei `main.py` und starten Sie `fastapi dev` mit:

<div class="termy">

```console

        ProjectBuildingException exception = new ProjectBuildingException(results);
        String message = exception.getMessage();

        assertTrue(
                message.contains("3 problems were encountered while processing the POMs (2 errors)"),
                "Message should contain problem count and error count");

}
```

/// tip | Tipp

Wenn Sie eine `HTTPException` auslösen, können Sie dem Parameter `detail` jeden Wert übergeben, der in JSON konvertiert werden kann, nicht nur `str`.

Sie könnten ein `dict`, eine `list`, usw. übergeben.

Diese werden von **FastAPI** automatisch gehandhabt und in JSON konvertiert.

///

## Benutzerdefinierte Header hinzufügen { #add-custom-headers }

Ähnlich wie Sie [`dependencies` zu den *Pfadoperation-Dekoratoren* hinzufügen](dependencies-in-path-operation-decorators.md){.internal-link target=_blank} können, können Sie sie auch zur `FastAPI`-Anwendung hinzufügen.

In diesem Fall werden sie auf alle *Pfadoperationen* in der Anwendung angewendet:

{* ../../docs_src/dependencies/tutorial012_an_py39.py hl[17] *}

    /**
     * Validate the specified settings.
     *
     * @param settings The settings to validate, must not be {@code null}.
     * @param problems The container used to collect problems that were encountered, must not be {@code null}.
     */
    void validate(Settings settings, SettingsProblemCollector problems);

    /**
     * Validate the specified settings.
     *