Method ReleaseHandles

IO/IOSS/vtkIOSSReaderInternal.h:305–313

* Releases any open file handles. */

   * Releases any open file handles.
   */
  void ReleaseHandles()
  {
    // RegionMap is where all the handles are kept. All we need to do is release
    // them.
    for (const auto& pair : this->RegionMap)
    {
      pair.second->get_database()->closeDatabase();
    }
  }

  /**
   * Little more aggressive than `ReleaseHandles` but less intense than `Reset`,