open method
Implementation
void open(Map<String, dynamic> options) async{
Map<String, dynamic> validationResult = _validateOptions(options);
if (!validationResult['success']) {
_handleResult({
'type': _CODE_PAYMENT_ERROR,
'data': {
'code': "ERROR",
'message': validationResult['message']
}
});
return;
}
var response = await _channel.invokeMethod('open', options);
_handleResult(response);
}