-keep public class com.google.common.**
-dontwarn com.google.common.**

-keep public class org.apache.commons.codec.binary.Base64 { public *; }

-keep class com.google.android.gms.ads.identifier.AdvertisingIdClient { public *; }
-keep class com.google.android.gms.ads.identifier.AdvertisingIdClient$Info { public *; }
