MessageBuilder::__construct( WordPress\AiClient\Builders\Input $input = null, WordPress\AiClient\Messages\Enums\MessageRoleEnum|null $role = null )

43    public function __construct($input = null, ?MessageRoleEnum $role = null)44    {45        $this->role = $role;46        if ($input === null) {47            return;48        }49        // Handle different input types50        if ($input instanceof MessagePart) {51            $this->parts[] = $input;52        } elseif (is_string($input)) {53            $this->withText($input);54        } elseif ($input instanceof File) {55            $this->withFile($input);56        } elseif ($input instanceof FunctionCall) {57            $this->withFunctionCall($input);58        } elseif ($input instanceof FunctionResponse) {59            $this->withFunctionResponse($input);60        } elseif (is_array($input) && MessagePart::isArrayShape($input)) {61            $this->parts[] = MessagePart::fromArray($input);62        } else {63            throw new InvalidArgumentException('Input must be a string, MessagePart, MessagePartArrayShape, File, FunctionCall, or FunctionResponse.');64        }65    }