enums library Null safety

Classes

ElginAlign
*ElginAlign
ElginBarcodeTextPosition
*ElginBarcodeTextPosition
ElginFont
*ElginFont
ElginPrinter
*ElginPrinter
ElginPrinterModel
*ElginPrinterModel
ElginPrinterType
*ElginPrinterType
ElginQrcodeCorrection
*ElginQrcodeCorrection
ElginQrcodeSize
*ElginQrcodeSize
ElginSize
*ElginSize
EliginBarcodeType
*EliginBarcodeType