Executors.newSingleThreadScheduledExecutor(new ThreadFactoryImpl());
    // Add a listener to shut down the executor after the service is stopped. This ensures that the
    // JVM shutdown will not be prevented from exiting after this service has stopped or failed.
    // Technically this listener is added after start() was called so it is a little gross, but it

    /**
     * Builds a summary string from source document titles.
     *
     * @param msg the assistant chat message
     * @param summaryMaxChars the maximum characters for the content summary
     * @return a string listing referenced document titles
     */
    protected String buildSourceTitlesContent(final ChatMessage msg, final int summaryMaxChars) {
        final List<ChatSource> sources = msg.getSources();

### Dependencias Opcionales Adicionales { #additional-optional-dependencies }

Existen algunas dependencias adicionales que podrías querer instalar.

Dependencias opcionales adicionales de Pydantic:

Te contaré un poquito más sobre estos **conceptos** aquí, y eso, con suerte, te dará la **intuición** que necesitarías para decidir cómo implementar tu API en diferentes entornos, posiblemente incluso en aquellos **futuros** que aún no existen.

Al considerar estos conceptos, podrás **evaluar y diseñar** la mejor manera de implementar **tus propias APIs**.

En los próximos capítulos, te daré más **recetas concretas** para implementar aplicaciones de FastAPI.

<div class="termy">

```console
$ pip install -r requirements.txt
---> 100%
Successfully installed fastapi pydantic
```

</div>

/// info | Información

Existen otros formatos y herramientas para definir e instalar dependencias de paquetes.

///

### Crear el Código de **FastAPI** { #create-the-fastapi-code }

* Crea un directorio `app` y entra en él.

Quando o **contêiner** é iniciado e está rodando (iniciado a partir de uma **imagem de contêiner**), ele pode criar ou modificar arquivos, variáveis de ambiente, etc. Essas mudanças vão existir somente nesse contêiner, mas não persistirão na imagem subjacente do container (não serão salvas no disco).

Uma imagem de contêiner é comparável ao arquivo de **programa** e seus conteúdos, ex.: `python` e algum arquivo `main.py`.

      std::string(TF_Message(s_)));
}

TEST_F(CApiFunctionTest, Attribute) {
  DefineFunction(func_name_, &func_);

  // Get non existent attribute
  TF_Buffer* attr_buf = TF_NewBuffer();
  TF_FunctionGetAttrValueProto(func_, "foo_attr", attr_buf, s_);
  EXPECT_EQ(TF_INVALID_ARGUMENT, TF_GetCode(s_));

      }
    }
    connection.writePing()
    connection.shutdown(ErrorCode.PROTOCOL_ERROR)
    assertThat(connection.openStreamCount()).isEqualTo(1)
    connection.awaitPong() // Prevent the peer from exiting prematurely.

    // Verify the peer received what was expected.
    val synStream1 = peer.takeFrame()
    assertThat(synStream1.type).isEqualTo(Http2.TYPE_HEADERS)
    val pingFrame = peer.takeFrame()

        <field xdoc.separator="blank" xml.insertParentFieldsUpTo="reporting">
          <name>profiles</name>
          <version>4.0.0+</version>
          <description>A listing of project-local build profiles which will modify the build process
            when activated.</description>
          <association>
            <type>Profile</type>
            <multiplicity>*</multiplicity>

1DA3B..1DA6C  ; valid                                  # 8.0  SIGNWRITING MOUTH CLOSED NEUTRAL..SIGNWRITING EXCITEMENT
1DA6D..1DA74  ; valid                  ;      ; NV8    # 8.0  SIGNWRITING SHOULDER HIP SPINE..SIGNWRITING TORSO-FLOORPLANE TWISTING
1DA75         ; valid                                  # 8.0  SIGNWRITING UPPER BODY TILTING FROM HIP JOINTS
1DA76..1DA83  ; valid                  ;      ; NV8    # 8.0  SIGNWRITING LIMB COMBINATION..SIGNWRITING LOCATION DEPTH