21     private $handlers = [];  variable in GuzzleHttp\\Promise\\Promise
41             $this->handlers[] = [$p, $onFulfilled, $onRejected];
142         $handlers = $this->handlers;
143         $this->handlers = null;
147         if (!$handlers) {
156             Utils::queue()->add(static function () use ($id, $value, $handlers): void {
157                 foreach ($handlers as $handler) {
163             $value->handlers = array_merge($value->handlers, $handlers);
167                 static function ($value) use ($handlers): void {
168                     foreach ($handlers as $handler) {
172                 static function ($reason) use ($handlers): void {
173                     foreach ($handlers as $handler) {