MessageBuilder::get(): WordPress\AiClient\Messages\DTO\Message

208    public function get(): Message209    {210        if (empty($this->parts)) {211            throw new InvalidArgumentException('Cannot build an empty message. Add content using withText() or similar methods.');212        }213        if ($this->role === null) {214            throw new InvalidArgumentException('Cannot build a message with no role. Set a role using usingRole() or similar methods.');215        }216        // At this point, we've validated that $this->role is not null217        /** @var MessageRoleEnum $role */218        $role = $this->role;219        return new Message($role, $this->parts);220    }