code: @Override
    public @NotNull String getIntegratorTemplateSelector() {
      if (currentPage != null && urlHandlerConfig.isIntegrator(currentPage)) {
        if (isResourceUrlSecure(currentPage)) {
          return SELECTOR_INTEGRATORTEMPLATE_SECURE;
        }
        else {
          return SELECTOR_INTEGRATORTEMPLATE;
        }
      }
      if (integratorTemplateSecureMode) {
        return SELECTOR_INTEGRATORTEMPLATE_SECURE;
      }
      else {
        return SELECTOR_INTEGRATORTEMPLATE;
      }
    }
docs: Returns selector for integrator template mode.
  In HTTPS mode the secure selector is returned, otherwise the default selector.
  HTTPS mode is active if the current page is an integrator page and has simple mode-HTTPs activated, or
  the secure integrator mode selector is included in the current request.
  @return Integrator template selector