Back out "[easy] Not strip enum TriState"
package com.facebook.common.util;
import com.facebook.infer.annotation.Functional;
-import com.facebook.proguard.annotations.DoNotStrip;
import javax.annotation.Nullable;
/** Generic tri-state enum for boolean values that can also be unset. */
-@DoNotStrip
public enum TriState {
YES,
NO,
