zcash-android-wallet-sdk/sdk-lib/proguard-consumer.txt

# Strip out log messages
-assumenosideeffects public class cash.z.ecc.android.sdk.internal.Twig {
    public static *** verbose(...);
    public static *** debug(...);
    public static *** info(...);
    public static *** warn(...);
    public static *** error(...);
    public static *** assertLoggingStripped();
}