Miljar

  DocumentReceiverWasRemoved::class => function ($state, DocumentReceiverWasRemoved $event) {
      /** @var ReadModel $readModel */
      $readModel = $this->readModel();

      $receivers = array_filter(
          $state[self::DOCUMENTS_KEY][$event->documentId()->toString()][self::DOCUMENT_RECEIVERS_KEY],
          function ($receiver) use ($event) {
              return $receiver['id'] !== $event->receiver()->value();
          }
      );