docs: @Nonnull
    public static PasswordHash createUserPasswordHash (@Nonnull @Nonempty final String sAlgorithmName,
                                                       @Nullable final IPasswordSalt aSalt,
                                                       @Nonnull final String sPlainTextPassword)
    {
      return s_aPHCMgr.createUserPasswordHash (sAlgorithmName, aSalt, sPlainTextPassword);
    }