hasOnlySecureContent method
A Boolean value indicating whether all resources on the page have been loaded over securely encrypted connections.
Official iOS API: https://developer.apple.com/documentation/webkit/wkwebview/1415002-hasonlysecurecontent
Implementation
Future<bool> hasOnlySecureContent() async {
Map<String, dynamic> args = <String, dynamic>{};
return await _channel.invokeMethod('hasOnlySecureContent', args);
}