# Classes as Dependencies

Before diving deeper into the **Dependency Injection** system, let's upgrade the previous example.

## A `dict` from the previous example

In the previous example, we were returning a `dict` from our dependency ("dependable"):

=== "Python 3.10+"

    ```Python hl_lines="9"
    {!> ../../../docs_src/dependencies/tutorial001_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="11"

## Renvoyer une `Response`

En fait, vous pouvez retourner n'importe quelle `Response` ou n'importe quelle sous-classe de celle-ci.

!!! note "Remarque"
    `JSONResponse` est elle-même une sous-classe de `Response`.

Et quand vous retournez une `Response`, **FastAPI** la transmet directement.

        List<Path> classes = dispatched.get(JavaPathType.CLASSES);
        List<Path> modules = dispatched.get(JavaPathType.MODULES);
        List<Path> unresolved = dispatched.get(PathType.UNRESOLVED);
        assertEquals(3, dispatched.size());
        assertEquals(1, unresolved.size());
        assertEquals(8, classes.size()); // "plexus.pom" and "junit.jar" are excluded.

                // Java types
                new DefaultType(
                        Type.JAR, Language.JAVA_FAMILY, "jar", null, false, JavaPathType.CLASSES, JavaPathType.MODULES),
                new DefaultType(Type.JAVADOC, Language.JAVA_FAMILY, "jar", "javadoc", false, JavaPathType.CLASSES),

# Custom Response Classes - File, HTML, Redirect, Streaming, etc.

There are several custom response classes you can use to create an instance and return them directly from your *path operations*.

Read more about it in the [FastAPI docs for Custom Response - HTML, Stream, File, others](https://fastapi.tiangolo.com/advanced/custom-response/).

You can import them directly from `fastapi.responses`:

```python
from fastapi.responses import (
    FileResponse,

    * Como as estruturas de dados do Pydantic são apenas instâncias de classes que você define, a auto completação, _linting_, _mypy_ e a sua intuição devem funcionar corretamente com seus dados validados.
* Valida **estruturas complexas**:

  </properties>

  <build>
    <directory>${project.basedir}/target</directory>
    <outputDirectory>${project.build.directory}/classes</outputDirectory>
    <finalName>${project.artifactId}-${project.version}</finalName>
    <testOutputDirectory>${project.build.directory}/test-classes</testOutputDirectory>
    <sourceDirectory>${project.basedir}/src/main/java</sourceDirectory>

          color: {{ colors.yellow }}
      - action: add-comment@v1
        args:
          comment: |
            :warning: This PR creates new top-level Java classes, but has no Javadoc present. Please document all top-level classes with Javadoc.

is:
  java: {{ files | extensions | match(term='java') | every }}
  new: {{ source.diff.files | map(attr='original_file') | match(regex=r/^$/) | some }}

colors:

							<paths>
								<path>${project.build.directory}/fess/WEB-INF/classes/fess_config.properties</path>
								<path>${project.build.directory}/fess/WEB-INF/classes/fess_env_crawler.properties</path>
								<path>${project.build.directory}/fess/WEB-INF/classes/fess_env_suggest.properties</path>
								<path>${project.build.directory}/fess/WEB-INF/classes/fess_env_thumbnail.properties</path>

  public void testCallables() {
    runTest("analysis/analysis-api/testData/components/scopeProvider/packageScope/callables.kt");
  }

  @Test
  @TestMetadata("classes.kt")
  public void testClasses() {
    runTest("analysis/analysis-api/testData/components/scopeProvider/packageScope/classes.kt");
  }

  @Test
  @TestMetadata("dependency.kt")
  public void testDependency() {