protected override SuggestContainerDescriptor <BookIndexItem> Suggest(
     SuggestContainerDescriptor <BookIndexItem> suggest, Dto.SearchInput input)
 => suggest
 .Term("authors-suggest", t => t
       //.MaxEdits(1)
       //.MaxInspections(2)
       //.MaxTermFrequency(3)
       //.MinDocFrequency(4)
       //.MinWordLength(5)
       //.PrefixLength(6)
       //.ShardSize(7)
       //.Size(8)
       .Analyzer("my-search-analyzer")
       .SuggestMode(SuggestMode.Always)
       .Text(input.Query)
       .Field(f => f.Authors))
 .Term("title-suggest", t => t
       .Analyzer("my-search-analyzer")
       .SuggestMode(SuggestMode.Always)
       .Text(input.Query)
       .Field(f => f.Title));
 protected abstract SuggestContainerDescriptor <TContentIndexItem> Suggest(
     SuggestContainerDescriptor <TContentIndexItem> suggest, Dto.SearchInput input);