OpenAPI también añadió los campos `example` y `examples` a otras partes de la especificación:

* <a href="https://github.com/OAI/OpenAPI-Specification/blob/main/versions/3.1.0.md#parameter-object" class="external-link" target="_blank">`Parameter Object` (en la especificación)</a> que era usado por FastAPI:
    * `Path()`
    * `Query()`
    * `Header()`
    * `Cookie()`

# Background Tasks - `BackgroundTasks`

You can declare a parameter in a *path operation function* or dependency function with the type `BackgroundTasks`, and then you can use it to schedule the execution of background tasks after the response is sent.

You can import it directly from `fastapi`:

```python
from fastapi import BackgroundTasks
```

///

## Use `Annotated` no tipo do parâmetro `q` { #use-annotated-in-the-type-for-the-q-parameter }

Lembra que eu disse antes que `Annotated` pode ser usado para adicionar metadados aos seus parâmetros na [Introdução aos tipos do Python](../python-types.md#type-hints-with-metadata-annotations){.internal-link target=_blank}?

---> 100%
```

</div>

## Using `Jinja2Templates` { #using-jinja2templates }

* Import `Jinja2Templates`.
* Create a `templates` object that you can reuse later.
* Declare a `Request` parameter in the *path operation* that will return a template.

- At the popup window, click `Import Settings from VCS`. Wait a few seconds. 
  - If the error says "Context Parameter 'Branch' missing", it's ok. Click into the error and add a context parameter `Branch` with value `myTestBranch`. Go back and it automatically reloads.
  - If there are any errors, read the error and fix your code.

        TypeToken<?> paramType = type.resolveType(typeVars[i]);
        // We require all @Generates methods to either be parameter-less or accept non-null
        // values for their generic parameter types.
        Object argValue = generate(paramType);
        if (argValue == null) {
          // When a parameter of a @Generates method cannot be created,
          // The type most likely is a collection.

    val contentType = requestBody.contentType()!!

    assertThat(contentType.mediaType).isEqualTo("text/plain; charset=utf-8")
    assertThat(contentType.parameter("charset")).isEqualTo("utf-8")
  }

     */
    @Test
    void testWriteParameterWordsWireFormat() {
        byte[] dst = new byte[10];
        int dstIndex = 0;
        // The method should return 0 as it writes no parameter words
        int result = smbComNegotiate.writeParameterWordsWireFormat(dst, dstIndex);
        assertEquals(0, result, "writeParameterWordsWireFormat should return 0.");
    }

    /**

 */

package com.google.common.util.concurrent;

import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.PARAMETER;
import static java.lang.annotation.RetentionPolicy.CLASS;

import com.google.common.annotations.GwtCompatible;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;

/**

 */

package com.google.common.graph;

import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.PARAMETER;
import static java.lang.annotation.RetentionPolicy.CLASS;

import com.google.common.annotations.GwtCompatible;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;

/**