docs: public void registerPasswordHashCreator (@Nonnull final IPasswordHashCreator aPasswordHashCreator)
    {
      ValueEnforcer.notNull (aPasswordHashCreator, "PasswordHashCreator");
  
      final String sAlgorithmName = aPasswordHashCreator.getAlgorithmName ();
      if (StringHelper.hasNoText (sAlgorithmName))
        throw new IllegalArgumentException ("PasswordHashCreator algorithm '" + aPasswordHashCreator + "' is empty!");
  
      m_aRWLock.writeLocked ( () -> {
        if (m_aPasswordHashCreators.containsKey (sAlgorithmName))
          throw new IllegalArgumentException ("Another PasswordHashCreator for algorithm '" +
                                              sAlgorithmName +
                                              "' is already registered!");
        m_aPasswordHashCreators.put (sAlgorithmName, aPasswordHashCreator);
      });
  
      if (LOGGER.isDebugEnabled ())
        LOGGER.debug ("Registered password hash creator algorithm '" + sAlgorithmName + "' to " + aPasswordHashCreator);
    }