startScan() in WifiManager deprecated in Android P

Question

How to get scan result from wifi for example every 3 seconds, without mWifimanager.startScan();

Google says :

startScan() This method was

Answer 1

From WifiManager#EXTRA_RESULTS_UPDATED

Note: Apps holding android.Manifest.permission.NETWORK_SETTINGS permission are exempted from scan throttling.

Note: This is a system permission, regular apps can't use it without rooting and moving the app to the 'privileged' location or having it baked into a custom ROM.