code: private AuthConfigProvider getAuthConfigProvider(String appContext) {
          AuthConfigProvider provider = null;
          AuthConfigFactory providerFactory = getAuthConfigFactory();
          if (providerFactory != null) {
              if (providerConfigModified &&
                  providerFactory instanceof ProviderRegistry) {
                  ((ProviderRegistry) providerFactory).setProvider(jaspiProviderServiceRef.getService());
                  providerConfigModified = false;
              }
              provider = providerFactory.getConfigProvider("HttpServlet", appContext, (RegistrationListener) null);
          }
          return provider;
      }
docs: Some comment why we're doing this