code: func (s *IndicesPutMappingService) AllowNoIndices(allowNoIndices bool) *IndicesPutMappingService {
  	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.