PromptBuilder::__clone()

121    public function __clone()122    {123        // Deep clone messages array (Message has __clone)124        $clonedMessages = [];125        foreach ($this->messages as $message) {126            $clonedMessages[] = clone $message;127        }128        $this->messages = $clonedMessages;129        // Clone model config (ModelConfig has __clone)130        $this->modelConfig = clone $this->modelConfig;131        // Clone request options if set (contains only primitives)132        if ($this->requestOptions !== null) {133            $this->requestOptions = clone $this->requestOptions;134        }135        // Note: $registry, $model, and $eventDispatcher are service objects136        // and are intentionally NOT cloned - they should be shared references.137    }