goBack method
Goes back in the history of this WebView.
If there is no back history item this is a no-op.
Implementation
@override
Future<void> goBack() async {
final int? webviewId = instanceManager.getInstanceId(this);
if (webviewId == null) {
throw 'Failed to get the webview instance';
}
await (await LinuxWebViewPlugin.channel)
.invokeMethod('goBack', <String, dynamic>{
'webviewId': webviewId,
});
}