Lucene.Net.Analysis.Synonym.FSTSynonymFilterFactory.Create C# (CSharp) Method

        public override TokenStream Create(TokenStream input)
        {
            // if the fst is null, it means there's actually no synonyms... just return the original stream
            // as there is nothing to do here.
            return map.fst == null ? input : new SynonymFilter(input, map, ignoreCase);
        }