Cluster* Cluster::Create(Segment* pSegment, long idx, long long off) {
  if (!pSegment || off < 0)
    return NULL;

  const long long element_start = pSegment->m_start + off;

  Cluster* const pCluster =
      new (std::nothrow) Cluster(pSegment, idx, element_start);

  return pCluster;
}
Unknown