BlockGroup::BlockGroup(Cluster* pCluster, long idx, long long block_start,
                       long long block_size, long long prev, long long next,
                       long long duration, long long discard_padding)
    : BlockEntry(pCluster, idx),
      m_block(block_start, block_size, discard_padding),
      m_prev(prev),
      m_next(next),
      m_duration(duration) {}
Unknown