question: public PerFieldAnalyzerWrapper ( Analyzer defaultAnalyzer , Map < String , Analyzer > fieldAnalyzers ) { super ( PER_FIELD_REUSE_STRATEGY ) ; this . defaultAnalyzer = defaultAnalyzer ; this . fieldAnalyzers = ( fieldAnalyzers != null ) ? fieldAnalyzers : Collections . < String , Analyzer > emptyMap ( ) ; }
target:  Constructs with default analyzer and a map of analyzers to use for  specific fields.