async def login(data: Annotated[FormData, Form()]):
    return data
```

Read the new docs: [Form Models - Forbid Extra Form Fields](https://fastapi.tiangolo.com/tutorial/request-form-models/#forbid-extra-form-fields).

### Features

* ✨ Add support for forbidding extra form fields with Pydantic models. PR [#12134](https://github.com/fastapi/fastapi/pull/12134) by [@tiangolo](https://github.com/tiangolo).

### Docs

package org.codelibs.fess.app.web.api.admin.dataconfig;

import org.codelibs.fess.app.web.admin.dataconfig.CreateForm;

/**
 * Request body for creating data config via REST API.
 * Extends CreateForm to inherit validation and field definitions.
 */
public class CreateBody extends CreateForm {

    /**
     * Creates a new CreateBody instance.
     */
    public CreateBody() {
    }

package org.codelibs.fess.app.web.api.admin.scheduler;

import org.codelibs.fess.app.web.admin.scheduler.CreateForm;

/**
 * Request body for creating scheduler via REST API.
 * Extends CreateForm to inherit validation and field definitions.
 */
public class CreateBody extends CreateForm {

    /**
     * Creates a new CreateBody instance.
     */
    public CreateBody() {
    }

import org.codelibs.fess.app.web.admin.dict.stemmeroverride.CreateForm;

/**
 * Request body for creating stemmer override dictionary via REST API.
 * Extends CreateForm to inherit validation and field definitions.
 */
public class CreateBody extends CreateForm {

    /**
     * Creates a new CreateBody instance.
     */
    public CreateBody() {
    }

package org.codelibs.fess.app.web.api.admin.elevateword;

import org.codelibs.fess.app.web.admin.elevateword.CreateForm;

/**
 * Request body for creating elevate word via REST API.
 * Extends CreateForm to inherit validation and field definitions.
 */
public class CreateBody extends CreateForm {

    /**
     * Creates a new CreateBody instance.
     */
    public CreateBody() {
    }

import org.codelibs.fess.app.web.admin.fileconfig.CreateForm;

/**
 * Request body for creating file configuration via REST API.
 * Extends CreateForm to inherit validation and field definitions.
 */
public class CreateBody extends CreateForm {

    /**
     * Creates a new CreateBody instance.
     */
    public CreateBody() {
    }

/**
 * The search form for Mapping.
 */
public class SearchForm {

    /**
     * Default constructor for SearchForm.
     */
    public SearchForm() {
    }

    /**
     * The dictionary ID field for mapping dictionary operations.
     */
    @Required
    public String dictId;

2. Validates against `supported.languages` list
3. Creates language-specific fields (e.g., `content_ja`, `title_en`, `content_sv`)
4. Applies language-specific analyzers for better search results

Configured in `fess_config.properties`:
```properties
indexer.language.fields=content,important_content,title
```

## Optional: Search Analysis Support

@SuppressWarnings("JUnit4ClassUsedInJUnit3")
public class AbstractSetTester<E> extends AbstractCollectionTester<E> {
  /*
   * Previously we had a field named set that was initialized to the value of
   * collection in setUp(), but that caused problems when a tester changed the
   * value of set or collection but not both.
   */
  protected final Set<E> getSet() {

import org.codelibs.fess.app.web.admin.dict.mapping.CreateForm;

/**
 * Request body for creating mapping dictionary via REST API.
 * Extends CreateForm to inherit validation and field definitions.
 */
public class CreateBody extends CreateForm {

    /**
     * Creates a new CreateBody instance.
     */
    public CreateBody() {
    }