code: func (s *SearchShardsService) AllowNoIndices(allowNoIndices bool) *SearchShardsService {
  	s.allowNoIndices = &allowNoIndices
  	return s
  }
docs: // AllowNoIndices indicates whether to ignore if a wildcard indices
  // expression resolves into no concrete indices. (This includes `_all` string
  // or when no indices have been specified).