printImage method
Prints an image with a specified align (left, center, or right).
image: The image data as a Uint8List.
align: The alignment of the image (e.g., left, center, right).
Returns a String indicating the result or null if unsuccessful.
Implementation
Future<String?> printImage(Uint8List image,
{required SunmiPrintAlign align}) async {
return await SunmiPrinter.printImage(image, align: align);
}