}

  public void testPutAfterHash() {
    Hasher hasher = hmacMd5(MD5_KEY).newHasher();

    assertThat(
            hasher
                .putString("The quick brown fox jumps over the lazy dog", UTF_8)
                .hash()
                .toString())
        .isEqualTo("9753980fe94daa8ecaa82216519393a9");
    assertThrows(IllegalStateException.class, () -> hasher.putInt(42));
  }

     */

  /**
   * Creates a new, empty {@code HashMultimap} with the default initial capacities.
   *
   * <p>You may also consider the equivalent {@code
   * MultimapBuilder.hashKeys().hashSetValues().build()}, which provides more control over the
   * underlying data structure.
   */
  public static <K extends @Nullable Object, V extends @Nullable Object>
      HashMultimap<K, V> create() {

  /**
   * Creates a new, empty {@code HashMultimap} with the default initial capacities.
   *
   * <p>You may also consider the equivalent {@code
   * MultimapBuilder.hashKeys().hashSetValues().build()}, which provides more control over the
   * underlying data structure.
   */
  public static <K extends @Nullable Object, V extends @Nullable Object>
      HashMultimap<K, V> create() {

  /**
   * Creates a new, empty {@code ArrayListMultimap} with the default initial capacities.
   *
   * <p>You may also consider the equivalent {@code
   * MultimapBuilder.hashKeys().arrayListValues().build()}, which provides more control over the
   * underlying data structure.
   */
  public static <K extends @Nullable Object, V extends @Nullable Object>
      ArrayListMultimap<K, V> create() {

  /**
   * Creates a new, empty {@code ArrayListMultimap} with the default initial capacities.
   *
   * <p>You may also consider the equivalent {@code
   * MultimapBuilder.hashKeys().arrayListValues().build()}, which provides more control over the
   * underlying data structure.
   */
  public static <K extends @Nullable Object, V extends @Nullable Object>
      ArrayListMultimap<K, V> create() {

        }
    }

    /**
     * Hashes the specified text using the given algorithm and converts it to a string.
     *
     * @param algorithm
     *            The algorithm. Must not be {@literal null} or an empty string.
     * @param text
     *            The string to be hashed.
     * @return The hashed string.
     */

		return nil
	}

	r.contentHasher = cs.Type.Hasher()
	if r.contentHasher == nil {
		return ErrInvalidChecksum
	}
	return nil
}

// AddServerSideChecksumHasher adds a new hasher for computing the server-side checksum.
func (r *Reader) AddServerSideChecksumHasher(t ChecksumType) {
	h := t.Hasher()
	if h == nil {
		return
	}
	r.ServerSideHasher = h

* Asegúrate de tener modelos Pydantic bien definidos para tus request bodies y responses.
* Configura los permisos y roles necesarios usando dependencias.
* Nunca guardes contraseñas en texto plano, solo hashes de contraseñas.
* Implementa y utiliza herramientas criptográficas bien conocidas, como pwdlib y JWT tokens, etc.
* Añade controles de permisos más detallados con Scopes de OAuth2 donde sea necesario.
* ...etc.

* Make sure you have well defined Pydantic models for your request bodies and responses.
* Configure any required permissions and roles using dependencies.
* Never store plaintext passwords, only password hashes.
* Implement and use well-known cryptographic tools, like pwdlib and JWT tokens, etc.
* Add more granular permission controls with OAuth2 scopes where needed.
* ...etc.