func (q *mergeQuerier) Close() error {
	// TODO return multiple errors?
	var lastErr error
	for _, querier := range q.queriers {
		if err := querier.Close(); err != nil {
			lastErr = err
		}
	}
	return lastErr
}
func (q *mergeQuerier) Close() error {
	
	var lastErr error
	for _, querier := range q.queriers {
		if err := querier.Close(); err != nil {
			lastErr = err
		}
	}
	return lastErr
}
func ( q * mergeQuerier ) Close ( ) error { // TODO return multiple errors? var lastErr error for _ , querier := range q . queriers { if err := querier . Close ( ) ; err != nil { lastErr = err } } return lastErr }
// Close releases the resources of the Querier.
Close releases the resources of the Querier .