Specifies file type of returned image content of the QRCode signature when ReturnContent property is enabled. By default it set to Null. That means to return QRCode image content in original format. This image format is specified at Formatgroupdocs.signature.domain/qrcodesignature/format Possible supported values are FileType.JPEG FileType.PNG FileType.BMP. If provided format is not supported than QRCode image content in .png format will be returned....Options assembly GroupDocs.Signature ReturnContent...