package com.vungle.warren.utility;

import java.util.HashSet;

/* loaded from: classes2.dex */
public abstract class d {
    public static synchronized void a(HashSet hashSet, String str) {
        synchronized (d.class) {
            hashSet.add(str);
        }
    }

    public static synchronized HashSet b(HashSet hashSet) {
        HashSet hashSet2;
        synchronized (d.class) {
            hashSet2 = new HashSet(hashSet);
        }
        return hashSet2;
    }
}