docs: @Override
      @FFDCIgnore(PasswordCheckFailedException.class)
      public String checkPassword(String userSecurityName, @Sensitive String password) throws RegistryException {
          try {
              return customUserRegistry.checkPassword(userSecurityName, password);
          } catch (PasswordCheckFailedException e) {
              return null;
          } catch (Exception e) {
              throw new RegistryException(e.getMessage(), e);
          }
      }