code: protected function loadFopGroup(FopCreateFopOptions $options)
      {
          foreach ($options->fopGroup as $group) {
              if ($this instanceof CreateFormOfPayment14) {
                  $this->fopGroup[] = new FopGroup14($group);
              } else {
                  $this->fopGroup[] = new FopGroup($group);
              }
          }
      }
docs: Load fopGroup
  
  @param FopCreateFopOptions $options