* Hc5FormScheme formScheme = new Hc5FormScheme(params);
 * formScheme.authenticate(credentials, executor);
 * }
 * </pre>
 *
 * <p>Parameters:
 * <ul>
 * <li>ENCODING - The character encoding to use for request parameters.</li>
 * <li>TOKEN_URL - The URL to request the token from.</li>
 * <li>TOKEN_PATTERN - The regex pattern to extract the token from the response.</li>

  private enum CharAtFunction implements Function<String, Character> {
    AT0(0),
    AT1(1),
    AT2(2),
    AT3(3),
    AT4(4),
    AT5(5),
    ;

    final int index;

    CharAtFunction(int index) {
      this.index = index;
    }

    @Override
    public Character apply(String string) {
      return string.charAt(index);
    }
  }

  private enum CharAtFunction implements Function<String, Character> {
    AT0(0),
    AT1(1),
    AT2(2),
    AT3(3),
    AT4(4),
    AT5(5),
    ;

    final int index;

    CharAtFunction(int index) {
      this.index = index;
    }

    @Override
    public Character apply(String string) {
      return string.charAt(index);
    }
  }

          "Only a colon may follow a close bracket: %s",
          hostPortString);
      for (int i = closeBracketIndex + 2; i < hostPortString.length(); ++i) {
        checkArgument(
            Character.isDigit(hostPortString.charAt(i)),
            "Port must be numeric: %s",
            hostPortString);
      }
      return new String[] {host, hostPortString.substring(closeBracketIndex + 2)};
    }
  }

 * FormScheme formScheme = new FormScheme(params);
 * formScheme.authenticate(credentials, executor);
 * }
 * </pre>
 *
 * <p>Parameters:
 * <ul>
 * <li>ENCODING - The character encoding to use for request parameters.</li>
 * <li>TOKEN_URL - The URL to request the token from.</li>
 * <li>TOKEN_PATTERN - The regex pattern to extract the token from the response.</li>

	for {
		b, err := cr.reader.ReadByte()
		if err == io.EOF {
			err = io.ErrUnexpectedEOF
		}
		if err != nil {
			cr.err = err
			return n, cr.err
		}
		if b == ';' { // separating character
			break
		}

		// Manually deserialize the size since AWS specified
		// the chunk size to be of variable width. In particular,
		// a size of 16 is encoded as `10` while a size of 64 KB
		// is `10000`.

* `https://www.googleapis.com/auth/drive` es usado por Google.

/// info | Información

En OAuth2 un "scope" es solo un string que declara un permiso específico requerido.

No importa si tiene otros caracteres como `:` o si es una URL.

Esos detalles son específicos de la implementación.

Para OAuth2 son solo strings.

///

## Código para obtener el `username` y `password` { #code-to-get-the-username-and-password }

      negligent acts) or agreed to in writing, shall any Contributor be
      liable to You for damages, including any direct, indirect, special,
      incidental, or consequential damages of any character arising as a
      result of this License or out of the use or inability to use the
      Work (including but not limited to damages for loss of goodwill,
      work stoppage, computer failure or malfunction, or any and all

      negligent acts) or agreed to in writing, shall any Contributor be
      liable to You for damages, including any direct, indirect, special,
      incidental, or consequential damages of any character arising as a
      result of this License or out of the use or inability to use the
      Work (including but not limited to damages for loss of goodwill,
      work stoppage, computer failure or malfunction, or any and all

- `write(data)` : écrit `data` (`str` ou `bytes`) dans le fichier.
- `read(size)` : lit `size` (`int`) octets/caractères du fichier.
- `seek(offset)` : se déplace à la position d'octet `offset` (`int`) dans le fichier.
    - Par ex., `await myfile.seek(0)` irait au début du fichier.