import java.util.ArrayList; import java.util.Collection; import java.util.List; public class l<T> implements k<T> { private List<T> a = new ArrayList(); public void a(T var1) { this.a.add(var1); } public void a(Collection<? extends T> var1) { this.a.addAll(var1); } public List<T> a() { return this.a; } }