This doesn't go inside of each JSON Schema contained in OpenAPI, this goes outside, in the *path operation* directly.

### Using the `openapi_examples` Parameter { #using-the-openapi-examples-parameter }

You can declare the OpenAPI-specific `examples` in FastAPI with the parameter `openapi_examples` for:

* `Path()`
* `Query()`
* `Header()`
* `Cookie()`
* `Body()`
* `Form()`
* `File()`

# `Request` class

You can declare a parameter in a *path operation function* or dependency to be of type `Request` and then you can access the raw request object directly, without any validation, etc.

Read more about it in the [FastAPI docs about using Request directly](https://fastapi.tiangolo.com/advanced/using-request-directly/)

You can import it directly from `fastapi`:

```python
from fastapi import Request
```

/// tip

                "Field nonFinalField: Nullability breaking change.",
                "Method com.example.Source.foo(java.lang.String[]): Parameter 0 from null accepting to non-null accepting breaking change.",
                "Constructor com.example.Source(java.lang.String[]): Parameter 0 from null accepting to non-null accepting breaking change."
            )
            assertHasNoWarning()
            assertHasNoInformation()

* Importieren Sie `HTMLResponse`.
* Übergeben Sie `HTMLResponse` als den Parameter `response_class` Ihres *Pfadoperation-Dekorators*.

{* ../../docs_src/custom_response/tutorial002_py310.py hl[2,7] *}

/// info | Info

Der Parameter `response_class` wird auch verwendet, um den „Medientyp“ der Response zu definieren.

                assertEquals("appendOsStats should take StringBuilder", StringBuilder.class, method.getParameterTypes()[0]);
                break;
            case "appendProcessStats":
                hasAppendProcessStats = true;
                assertEquals("appendProcessStats should take StringBuilder parameter", 1, method.getParameterCount());

        Object proxy, Method method, @Nullable Object[] args) {
      Invokable<?, ?> invokable = interfaceType.method(method);
      ImmutableList<Parameter> params = invokable.getParameters();
      for (int i = 0; i < args.length; i++) {
        Parameter param = params.get(i);
        if (!isNullable(param)) {
          checkNotNull(args[i]);
        }
      }

    @UriType(protocolType = ProtocolType.WEB)
    public String testMethod() {
        return "http://example.com";
    }

    // Test parameter with UriType annotation
    public void testMethodWithParameter(@UriType(protocolType = ProtocolType.FILE) final String uri) {
        // Method for testing parameter annotation
    }

    // Test groups for validation
    private interface TestGroup {
    }

* body
* request body
* response body
* JSON body
* form body
* file body
* function body

* parameter
* body parameter
* path parameter
* query parameter
* cookie parameter
* header parameter
* form parameter
* function parameter

* event
* startup event
* server'ın startup'ı
* shutdown event
* lifespan event

* handler
* event handler

But this guide shows you, more or less, how they are intended to be used.

///

### Using Pydantic's `exclude_unset` parameter { #using-pydantics-exclude-unset-parameter }

If you want to receive partial updates, it's very useful to use the parameter `exclude_unset` in Pydantic's model's `.model_dump()`.

Like `item.model_dump(exclude_unset=True)`.

Oder die Abhängigkeit gibt keinen Wert zurück.

Aber Sie müssen sie trotzdem ausführen/auflösen.

In diesen Fällen können Sie, anstatt einen Parameter der *Pfadoperation-Funktion* mit `Depends` zu deklarieren, eine `list` von `dependencies` zum *Pfadoperation-Dekorator* hinzufügen.