How to get onloadStart callback

[sugur]

How to get onloadStart callback
onLoadStart: (controller, url) {
},

[sugur]

It has been resolved and modified as follows

Future handleMethod(MethodCall call) async {
// final arguments = call.arguments as String?;
print(
'method1:${call.method} InlineWebviewMacOsController arguments:${call.arguments}',
);