/**
  * Display a listing of the resource.
  *
  * @return Response
  */
 protected function _loadData()
 {
     $_columns = ['instance_t.id', 'instance_t.instance_id_text', 'cluster_t.cluster_id_text', 'instance_t.create_date', 'user_t.email_addr_text', 'user_t.lmod_date'];
     /** @type Builder $_query */
     $_query = Instance::join('user_t', 'instance_t.user_id', '=', 'user_t.id')->join('cluster_t', 'instance_t.cluster_id', '=', 'cluster_t.id')->select($_columns);
     return $this->processDataRequest('instance_t', Instance::count(), $_columns, $_query);
 }