func (s *Sentinel) Close() error {
	s.mu.Lock()
	s.close()
	s.mu.Unlock()
	return nil
}
func (s *Sentinel) Close() error {
	s.mu.Lock()
	s.close()
	s.mu.Unlock()
	return nil
}
func ( s * Sentinel ) Close ( ) error { s . mu . Lock ( ) s . close ( ) s . mu . Unlock ( ) return nil }
// Close closes current connection to Sentinel.
Close closes current connection to Sentinel .