How to use -dontwarn in ProGuard?

Question

I am using android studio to build debug and release application. When i build debug/release application

./gradlew assembleDebug

./gradlew assembleRelease
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Answer 1

When I add new lib to project Generally this How I need to define for Progaurd.

Let's say I am using Twitter4J lib then I add dontwarn this way.

-keep class twitter4j.** { *; }

-dontwarn twitter4j.**