code: def _update_rr_ce_entry(self, rec):
          # type: (dr.DirectoryRecord) -> int
          '''
          An internal method to update the Rock Ridge CE entry for the given
          record.
  
          Parameters:
           rec - The record to update the Rock Ridge CE entry for (if it exists).
          Returns:
           The number of additional bytes needed for this Rock Ridge CE entry.
          '''
          if rec.rock_ridge is not None and rec.rock_ridge.dr_entries.ce_record is not None:
              celen = rec.rock_ridge.dr_entries.ce_record.len_cont_area
              added_block, block, offset = self.pvd.add_rr_ce_entry(celen)
              rec.rock_ridge.update_ce_block(block)
              rec.rock_ridge.dr_entries.ce_record.update_offset(offset)
              if added_block:
                  return self.pvd.logical_block_size()
  
          return f _update_rr_ce_entry(self, rec):
          # type: (dr.DirectoryRecord) -> int
          '''
          An internal method to update the Rock Ridge CE entry for the given
          record.
  
          Parameters:
           rec - The record to update the Rock Ridge CE entry for (if it exists).
          Returns:
           The number of additional bytes needed for this Rock Ridge CE entry.
          '''
          if rec.rock_ridge is not None and rec.rock_ridge.dr_entries.ce_record is not None:
              celen = rec.rock_ridge.dr_entries.ce_record.len_cont_area
              added_block, block, offset = self.pvd.add_rr_ce_entry(celen)
              rec.rock_ridge.update_ce_block(block)
              rec.rock_ridge.dr_entries.ce_record.update_offset(offset)
              if added_block:
                  return self.pvd.logical_block_size()
  
          return 0
docs: An internal method to update the Rock Ridge CE entry for the given
          record.
  
          Parameters:
           rec - The record to update the Rock Ridge CE entry for (if it exists).
          Returns:
           The number of additional bytes needed for this Rock Ridge CE entry.