code: protected function configGenerationAction(ParameterBag $post)
      {
          //CSRF validation
          if (!$this->picoAuth->isValidCSRF($post->get("csrf_token"))) {
              // On a token mismatch the submission gets ignored
              $this->picoAuth->addOutput("installer_step", 1);
              return;
          }
  
          $this->picoAuth->addOutput("installer_step", 2);
          $this->outputModulesConfiguration($post);
      }
docs: Form submission requesting to generate the plugin configuration
  
  @param ParameterBag $post