Android Question Admob Native Ads PersonalizedAds setting

The default behavior of the Google Mobile Ads SDK is to serve personalized ads. If a user has consented to receive only non-personalized ads, you can configure an AdRequest object to specify that only non-personalized ads should be requested. The following code causes non-personalized ads to be requested regardless of whether or not the user is in the EEA:

Bundle extras = new Bundle();
extras.putString("npa", "1");

AdRequest request = new AdRequest.Builder()
        .addNetworkExtrasBundle(AdMobAdapter.class, extras)
        .build();

Bundle extras = new Bundle();
 extras.putString("npa", "1");

Dim rb As AdRequestBuilder = builder
rb.NonPersonalizedAds
'continue to work with builder

    Dim ctxt As JavaObject
    ctxt.InitializeContext

    Dim builder As JavaObject
    builder.InitializeNewInstance("com.google.android.gms.ads.AdLoader.Builder", Array(ctxt, AdUnitId))
    Dim OnContentAdLoadedListener As Object = builder.CreateEventFromUI("com/google/android/gms/ads/formats/NativeContentAd.OnContentAdLoadedListener".Replace("/", "."), _
       "ContentAdLoaded", Null)
    builder.RunMethod("forContentAd", Array(OnContentAdLoadedListener))

    Dim adreqb As AdRequestBuilder=builder '!!!!!!!!!!!
    adreqb.NonPersonalizedAds              '!!!!!!!!!!!

    Dim Listener As JavaObject
    Listener.InitializeNewInstance(Application.PackageName & ".main$MyAdListener", Array("NativeAd"))  'change 'main' with the current activity module name
    builder.RunMethod("withAdListener", Array(Listener))
    Dim AdLoader As JavaObject = builder.RunMethod("build", Null)

    Dim AdRequestBuilder As JavaObject
    AdRequestBuilder.InitializeNewInstance("com/google/android/gms/ads/AdRequest.Builder".Replace("/", "."), Null)

    AdLoader.RunMethod("loadAd", Array(AdRequestBuilder.RunMethod("build", Null)))
    Wait For ContentAdLoaded_Event (MethodName As String, Args() As Object)

AdRequest.Builder builder = new AdRequest.Builder();
if (/*Request non-personalized ads*/) {
    Bundle extras = new Bundle();
    extras.putString("npa", "1");
    builder.addNetworkExtrasBundle(AdMobAdapter.class, extras);
}
AdRequest request = builder.build();