"name": "The Foo live"
    }
}
```

Again, doing just that declaration, with **FastAPI** you get:

* Editor support (completion, etc.), even for nested models
* Data conversion
* Data validation
* Automatic documentation

## Special types and validation

Apart from normal singular types like `str`, `int`, `float`, etc. you can use more complex singular types that inherit from `str`.

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.web.admin.elevateword;

import org.lastaflute.web.validation.Required;
import org.lastaflute.web.validation.theme.conversion.ValidateTypeFailure;

import jakarta.validation.constraints.Size;

/**
 * @author Keiichi Watanabe
 */
public class EditForm extends CreateForm {

    @Required
    @Size(max = 1000)

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.web.admin.reqheader;

import org.lastaflute.web.validation.Required;
import org.lastaflute.web.validation.theme.conversion.ValidateTypeFailure;

import jakarta.validation.constraints.Size;

/**
 * @author Keiichi Watanabe
 */
public class EditForm extends CreateForm {

    @Required
    @Size(max = 1000)

  /**
   * Configure code points to be escaped for conversion to `java.net.URI`. That class is more
   * strict than the others.
   */
  fun escapeForUri(vararg codePoints: Int) =
    apply {
      uriEscapedCodePoints.append(String(*codePoints))
    }

  /**
   * Configure code points to be stripped in conversion to `java.net.URI`. That class is more
   * strict than the others.
   */

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.web.admin.joblog;

import org.lastaflute.web.validation.Required;
import org.lastaflute.web.validation.theme.conversion.ValidateTypeFailure;

/**
 * @author codelibs
 * @author Shunji Makino
 */
public class EditForm {

    @ValidateTypeFailure
    public int crudMode;

    @Required
    @ValidateTypeFailure

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.app.web.admin.crawlinginfo;

import org.lastaflute.web.validation.Required;
import org.lastaflute.web.validation.theme.conversion.ValidateTypeFailure;

import jakarta.validation.constraints.Size;

/**
 * @author shinsuke
 * @author Shunji Makino
 */
public class EditForm {

    @ValidateTypeFailure
    public int crudMode;

  @Override
  public int intValue() {
    return (int) sum();
  }

  /** Returns the {@link #sum} as a {@code float} after a widening primitive conversion. */
  @Override
  public float floatValue() {
    return (float) sum();
  }

  /** Returns the {@link #sum} as a {@code double} after a widening primitive conversion. */
  @Override

  @Override
  public int intValue() {
    return (int) sum();
  }

  /** Returns the {@link #sum} as a {@code float} after a widening primitive conversion. */
  @Override
  public float floatValue() {
    return (float) sum();
  }

  /** Returns the {@link #sum} as a {@code double} after a widening primitive conversion. */
  @Override

  @Override
  public int intValue() {
    return (int) sum();
  }

  /** Returns the {@link #sum} as a {@code float} after a widening primitive conversion. */
  @Override
  public float floatValue() {
    return (float) sum();
  }

  /** Returns the {@link #sum} as a {@code double} after a widening primitive conversion. */
  @Override

/// tip | Consejo

`JSONResponse` en sí misma es una subclase de `Response`.

///

Y cuando devuelves una `Response`, **FastAPI** la pasará directamente.

No hará ninguna conversión de datos con modelos Pydantic, no convertirá el contenido a ningún tipo, etc.

Esto te da mucha flexibilidad. Puedes devolver cualquier tipo de dato, sobrescribir cualquier declaración de datos o validación, etc.