exercising permissions granted by this License.

      "Source" form shall mean the preferred form for making modifications,
      including but not limited to software source code, documentation
      source, and configuration files.

      "Object" form shall mean any form resulting from mechanical
      transformation or translation of a Source form, including but
      not limited to compiled object code, generated documentation,

///

## O que é "Form Data"

O jeito que os formulários HTML (`<form></form>`) enviam os dados para o servidor normalmente usa uma codificação "especial" para esses dados, a qual é diferente do JSON.

**FastAPI** se certificará de ler esses dados do lugar certo, ao invés de JSON.

@app.post("/login/")
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

* <a href="https://github.com/Kludex/python-multipart" target="_blank"><code>python-multipart</code></a> - Required if you want to support form <abbr title="converting the string that comes from an HTTP request into Python data">"parsing"</abbr>, with `request.form()`.

Used by FastAPI / Starlette:

  @Override
  public String toString() {
    return asMapOfRanges().toString();
  }

  /**
   * This class is used to serialize ImmutableRangeMap instances. Serializes the {@link
   * #asMapOfRanges()} form.
   */
  private static class SerializedForm<K extends Comparable<?>, V> implements Serializable {

    private final ImmutableMap<Range<K>, V> mapOfRanges;

Mas `OAuth2PasswordRequestForm` é apenas uma dependência de classe que você mesmo poderia ter escrito ou poderia ter declarado os parâmetros do `Form` (formulário) diretamente.

Mas como é um caso de uso comum, ele é fornecido diretamente pelo **FastAPI**, apenas para facilitar.

///

### Use os dados do formulário

/// tip | Dica

   * Collections#frequency}) can cause major performance problems.
   *
   * <p>The returned set's {@link Object#toString} method returns a shorthand form of the set's
   * contents, such as {@code "[1..100]}"}.
   *
   * @throws IllegalArgumentException if neither this range nor the domain has a lower bound, or if
   *     neither has an upper bound
   */

      throws IOException {
    // Interestingly, unlike File.getCanonicalFile(), Path/Files provides no way of getting the
    // canonical (absolute, normalized, symlinks resolved, etc.) form of a path to a nonexistent
    // file. getCanonicalFile() can at least get the canonical form of the part of the path which
    // actually exists and then append the normalized remainder of the path to that.
    Path normalizedAbsolutePath = path.toAbsolutePath().normalize();

      throws IOException {
    // Interestingly, unlike File.getCanonicalFile(), Path/Files provides no way of getting the
    // canonical (absolute, normalized, symlinks resolved, etc.) form of a path to a nonexistent
    // file. getCanonicalFile() can at least get the canonical form of the part of the path which
    // actually exists and then append the normalized remainder of the path to that.
    Path normalizedAbsolutePath = path.toAbsolutePath().normalize();

     */
    Builder<K, V> makeBuilder(int size) {
      return new Builder<>(size);
    }

    private static final long serialVersionUID = 0;
  }

  /**
   * Returns a serializable form of this object. Non-public subclasses should not override this
   * method. Publicly-accessible subclasses must override this method and should return a subclass