```mermaid
graph TB
    subgraph "❌ Not Supported"
        direction TB
        subgraph V2["Pydantic v2 Model"]
            V1Field["Pydantic v1 Model"]
        end
        subgraph V1["Pydantic v1 Model"]
            V2Field["Pydantic v2 Model"]
        end
    end

    style V2 fill:#f9fff3
    style V1 fill:#fff6f0
    style V1Field fill:#fff6f0
    style V2Field fill:#f9fff3
```

---

## FastAPI mini documentary

There's a [FastAPI mini documentary](https://www.youtube.com/watch?v=mpR8ngthqiE) released at the end of 2025, you can watch it online:

<a href="https://www.youtube.com/watch?v=mpR8ngthqiE"><img src="https://fastapi.tiangolo.com/img/fastapi-documentary.jpg" alt="FastAPI Mini Documentary"></a>

## **Typer**, the FastAPI of CLIs

		}
		if !result.IsTruncated {
			t.Errorf("%s: Expected IsTruncated to be `true`, but instead found it to be `%v`", instanceType, result.IsTruncated)
		}
	}
	// check paging with prefix at end returns less objects.
	{
		_, err = obj.PutObject(context.Background(), "bucket", "newPrefix", mustGetPutObjReader(t, bytes.NewBufferString(uploadContent), int64(len(uploadContent)), "", ""), opts)
		if err != nil {

			}
		}
		// different end alignments
		b1 = b[:i]
		for j := 0; j < len(b1); j++ {
			b1[j] = 'x'
			pos := IndexByte(b1, 'x')
			if pos != j {
				t.Errorf("IndexByte(%q, 'x') = %v", b1, pos)
			}
			b1[j] = 0
			pos = IndexByte(b1, 'x')
			if pos != -1 {
				t.Errorf("IndexByte(%q, 'x') = %v", b1, pos)
			}
		}
		// different start and end alignments
		b1 = b[i/2 : n-(i+1)/2]

        }
        if (this._domains != null) {
            return this._domains.map;
        }
        try {
            final String authDomain = tf.getCredentials().getUserDomain();
            // otherwise you end up with a wrong server name for kerberos
            // seems to be correct according to
            // https://lists.samba.org/archive/samba-technical/2009-August/066486.html

    end

    rect rgba(0, 255, 255, .1)
        code ->> function: say_hi(name="Camila")
        function ->> code: devolver resultado almacenado
    end

    rect rgba(0, 255, 0, .1)
        code ->> function: say_hi(name="Rick")
        function ->> execute: ejecutar código de la función
        execute ->> code: devolver el resultado
    end

    rect rgba(0, 255, 0, .1)

        execute ->> code: return the result
    end

    rect rgba(0, 255, 255, .1)
        code ->> function: say_hi(name="Camila")
        function ->> code: return stored result
    end

    rect rgba(0, 255, 0, .1)
        code ->> function: say_hi(name="Rick")
        function ->> execute: execute function code
        execute ->> code: return the result
    end

    rect rgba(0, 255, 0, .1)

$(this._element).on(EVENT_POINTERDOWN, event => start(event))\n      $(this._element).on(EVENT_POINTERUP, event => end(event))\n\n      this._element.classList.add(CLASS_NAME_POINTER_EVENT)\n    } else {\n      $(this._element).on(EVENT_TOUCHSTART, event => start(event))\n      $(this._element).on(EVENT_TOUCHMOVE, event => move(event))\n      $(this._element).on(EVENT_TOUCHEND, event => end(event))\n    }\n  }\n\n  _keydown(event) {\n    if (/input|textarea/i.test(event.target.tagName)) {\n      return\n...

    end
    dep ->> operation: Ejecutar dependencia, por ejemplo, sesión de BD
    opt raise
        operation -->> dep: Lanzar Exception (por ejemplo, HTTPException)
        opt handle
            dep -->> dep: Puede capturar excepción, lanzar una nueva HTTPException, lanzar otra excepción
        end
        handler -->> client: Response HTTP de error
    end

     *
     * @since 4.1.0
     */
    public static final String MAVEN_CACHE_CONFIG_PROPERTY = "maven.cache.config";

    /**
     * User property to enable cache statistics display at the end of the build.
     * When set to true, detailed cache statistics including hit/miss ratios,
     * request type breakdowns, and retention policy effectiveness will be displayed
     * when the build completes.
     *