Здесь переменная `app` будет экземпляром класса `FastAPI`.

Это будет основная точка взаимодействия для создания всего вашего API.

### Шаг 3: создайте *операцию пути (path operation)* { #step-3-create-a-path-operation }

#### Путь (path) { #path }

Здесь «путь» — это последняя часть URL, начиная с первого символа `/`.

Итак, в таком URL:

```
https://example.com/items/foo
```

...путь будет:

   * href="https://url.spec.whatwg.org/#syntax-url-path-segment">URL path segments</a>. The returned
   * escaper escapes all non-ASCII characters, even though <a
   * href="https://url.spec.whatwg.org/#url-code-points">many of these are accepted in modern
   * URLs</a>. (<a href="https://url.spec.whatwg.org/#path-state">If the escaper were to leave these

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.internal.impl;

import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.function.Supplier;

import org.apache.maven.api.Language;
import org.apache.maven.api.ProducedArtifact;
import org.apache.maven.api.Project;
import org.apache.maven.api.ProjectScope;

 */
final class TunnelingUnixSocket extends UnixSocket {
  private final File path;
  private InetSocketAddress inetSocketAddress;

  TunnelingUnixSocket(File path, UnixSocketChannel channel) {
    super(channel);
    this.path = path;
  }

  TunnelingUnixSocket(File path, UnixSocketChannel channel, InetSocketAddress address) {
    this(path, channel);
    this.inetSocketAddress = address;
  }

## About proxies with a stripped path prefix { #about-proxies-with-a-stripped-path-prefix }

Keep in mind that a proxy with stripped path prefix is only one of the ways to configure it.

Probably in many cases the default will be that the proxy doesn't have a stripped path prefix.

        }

        /**
         * Sets the path to the project to build.
         * This is typically the path to a pom.xml file or a directory containing a pom.xml file.
         *
         * @param path the path to the project
         * @return this builder instance
         */
        public ProjectBuilderRequestBuilder path(Path path) {
            this.path = path;
            return this;
        }

     *
     * @return the current working directory path, or null if not set
     */
    @Nullable
    Path cwd();

    /**
     * Returns the Maven home directory.
     * If not explicitly set, this value will be detected during parsing.
     *
     * @return the Maven home directory path, or null if not set
     */
    @Nullable
    Path mavenHome();

    /**

"Mounting" means adding a completely "independent" application in a specific path, that then takes care of handling everything under that path, with the _path operations_ declared in that sub-application.

### Top-level application { #top-level-application }

First, create the main, top-level, **FastAPI** application, and its *path operations*:

{* ../../docs_src/sub_applications/tutorial001_py39.py hl[3, 6:8] *}

            },
        ]
    }


def test_post_files_and_token(tmp_path, app: FastAPI):
    patha = tmp_path / "test.txt"
    pathb = tmp_path / "testb.txt"
    patha.write_text("<file content>")
    pathb.write_text("<file b content>")

    client = TestClient(app)
    with patha.open("rb") as filea, pathb.open("rb") as fileb:
        response = client.post(
            "/files/",
            data={"token": "foo"},

# Corpo - Múltiplos parâmetros { #body-multiple-parameters }

Agora que nós vimos como usar `Path` e `Query`, veremos usos mais avançados de declarações no corpo da requisição.

## Misture `Path`, `Query` e parâmetros de corpo { #mix-path-query-and-body-parameters }

Primeiro, é claro, você pode misturar `Path`, `Query` e declarações de parâmetro no corpo da requisição livremente e o **FastAPI** saberá o que fazer.