ZebraPrinter constructor
ZebraPrinter(})
Implementation
ZebraPrinter(String id, this.onPrinterFound, this.onPrinterDiscoveryDone,
this.onDiscoveryError, this.onChangePrinterStatus,
{this.onPermissionDenied}) {
channel = MethodChannel('ZebraPrinterObject' + id);
channel.setMethodCallHandler(nativeMethodCallHandler);
}