ReceiverRequestFactory::new(), 'greeting' => 'Hallo Familie', 'positions' => [] ]; } public function to(ReceiverRequestFactory $to): self { return $this->state(['to' => $to]); } public function status(InvoiceStatus $status): self { return $this->state(['status' => $status->value]); } public function position(InvoicePositionRequestFactory $factory): self { return $this->state(['positions' => [ $factory->create(), ]]); } }