/**
         * Sets the direct dependencies. If both a root dependency and direct dependencies are given in the request, the
         * direct dependencies from the request will be merged with the direct dependencies from the root dependency's
         * artifact descriptor, giving higher priority to the dependencies from the request.
         *
         * @param dependencies the direct dependencies, may be {@code null}

/**
 * Collects, flattens and resolves dependencies.
 */
@Experimental
public interface DependencyResolver extends Service {

    /**
     * Collects the transitive dependencies of some artifacts and builds a dependency graph for the given path scope.
     * Note that this operation is only concerned about determining the coordinates of the transitive dependencies and
     * does not actually resolve the artifact files.
     *

You can define dependencies that in turn can define dependencies themselves.

In the end, a hierarchical tree of dependencies is built, and the **Dependency Injection** system takes care of solving all these dependencies for you (and their sub-dependencies) and providing (injecting) the results at each step.

Also fügen wir sie in ihr eigenes `dependencies`-Modul (`app/dependencies.py`) ein.

Wir werden nun eine einfache Abhängigkeit verwenden, um einen benutzerdefinierten `X-Token`-Header zu lesen:

//// tab | Python 3.9+

```Python hl_lines="3  6-8" title="app/dependencies.py"
{!> ../../docs_src/bigger_applications/app_an_py39/dependencies.py!}
```

////

//// tab | Python 3.8+

Мы поместим их в отдельный модуль `dependencies` (`app/dependencies.py`).

Теперь мы воспользуемся простой зависимостью, чтобы прочитать кастомизированный `X-Token` из заголовка:

//// tab | Python 3.9+

```Python hl_lines="3  6-8" title="app/dependencies.py"
{!> ../../docs_src/bigger_applications/app_an_py39/dependencies.py!}
```

////

//// tab | Python 3.8+

    - tutorial/body-updates.md
    - Dependencies:
      - tutorial/dependencies/index.md
      - tutorial/dependencies/classes-as-dependencies.md
      - tutorial/dependencies/sub-dependencies.md
      - tutorial/dependencies/dependencies-in-path-operation-decorators.md
      - tutorial/dependencies/global-dependencies.md
      - tutorial/dependencies/dependencies-with-yield.md
    - Security:

            } catch (Exception e) {
                // Expected due to missing dependencies in test environment
                assertTrue(true);
                return;
            }

            assertEquals(0, functionBuilders.size());
        } catch (Exception e) {
            // Expected due to missing dependencies in test environment
            assertTrue(true);
        }
    }

    /**
     * Resolves the transitive dependencies of the specified project.
     *
     * @param project         The project whose dependencies should be resolved, must not be {@code null}.
     * @param scopesToResolve The dependency scopes that should be resolved, may be {@code null}.
     * @param session         The current build session, must not be {@code null}.

    /**
     * Returns the file paths of all dependencies, regardless of which tool option those paths should be placed on.
     * The returned list may contain a mix of Java class path, Java module path, and other types of path elements.
     * This collection has the same content as {@code getDependencies.values()} except that it does not contain
     * null elements.
     *
     * @return the paths of all dependencies
     */
    @Nonnull

                }
            }
        }

        dependencies {
            if (!stage.runsIndependent && prevStage != null) {
                dependOnPreviousStageTrigger(model, prevStage, os)
            }

            snapshotDependencies(dependencies)
        }
    })

fun Dependencies.dependOnPreviousStageTrigger(
    model: CIBuildModel,
    prevStage: Stage,