code: static Analyzer analyzer() {
          return new Analyzer()
          {
              @Override
              protected TokenStreamComponents createComponents( String fieldName )
              {
                  Tokenizer source = new WhitespaceTokenizer();
                  TokenStream filter = new LowerCaseFilter( source );
                  return new TokenStreamComponents( source, filter );
              }
  
              @Override
              public String toString()
              {
                  return "LOWER_CASE_WHITESPACE_ANALYZER";
              }
          };
      }
docs: /* same as LuceneDataSource.LOWER_CASE_WHITESPACE_ANALYZER