@Override
    public boolean equals(@Nullable SliceUsage o1, @Nullable SliceUsage o2) {
      return o1 == o2 || (o1 != null && o2 != null && o1.getUsageInfo().equals(o2.getUsageInfo()));
    }
@Override
    public boolean equals(@Nullable SliceUsage o1, @Nullable SliceUsage o2)