buildOptionForm example

// Each option (e.g. title, access, display as grid/table/list) fits into one     // of several "buckets," or boxes (Format, Fields, Sort, and so on).     $buckets = [];

    // Fetch options from the display plugin, with a list of buckets they go into.     $options = [];
    $view->getExecutable()->displayHandlers->get($display['id'])->optionsSummary($buckets, $options);

    // Place each option into its bucket.     foreach ($options as $id => $option) {
      // Each option self-identifies as belonging in a particular bucket.       $buckets[$option['category']]['build'][$id] = $this->buildOptionForm($view, $id, $option, $display);
    }

    // Place each bucket into the proper column.     foreach ($buckets as $id => $bucket) {
      // Let buckets identify themselves as belonging in a column.       if (isset($bucket['column']) && isset($build['columns'][$bucket['column']])) {
        $column = $bucket['column'];
      }
      // If a bucket doesn't pick one of our predefined columns to belong to, put       // it in the last one.       else {