private function seedFlowTypes()
 {
     $rows = array_map(function ($mainflowType, $detailingflowTypes) {
         $mainflowType = MainflowType::create(['name' => $mainflowType]);
         foreach ($detailingflowTypes as $detailingflowType) {
             DetailingflowType::create(['mainflow_type_id' => $mainflowType->id, 'name' => $detailingflowType]);
         }
     }, $this->mainflowTypes, $this->detailingflowTypes);
 }