text: const model = {
    filenameBase: 'service_alert_targets',
    extension: 'gtfs-rt',
    schema: [
      {
        name: 'alert_id',
        type: 'varchar(255)',
        required: true,
        primary: true,
        index: true,
        source: 'parent.id'
      },      
      {
        name: 'stop_id',
        type: 'varchar(255)',
        index: true,
        source: 'stopId',
        default: null
      },      
      {
        name: 'route_id',
        type: 'varchar(255)',
        index: true,
        source: 'routeId',
        default: null
      },
      {
        name: 'isUpdated',
        type: 'integer',
        required: true,
        min: 0,
        max: 1,
        default: 1
      },            
    ],
  };
  
  export default model;
  