code: func (s *Store) SessionDestroy(idx uint64, sessionID string) error {
  	tx := s.db.Txn(true)
  	defer tx.Abort()
  
  	// Call the session deletion.
  	if err := s.deleteSessionTxn(tx, idx, sessionID); err != nil {
  		return err
  	}
  
  	tx.Commit()
  	return nil
  }
docs: // SessionDestroy is used to remove an active session. This will
  // implicitly invalidate the session and invoke the specified
  // session destroy behavior.