question: public void toEPL ( StringWriter writer ) { writer . write ( "create " ) ; if ( unique ) { writer . write ( "unique " ) ; } writer . write ( "index " ) ; writer . write ( indexName ) ; writer . write ( " on " ) ; writer . write ( windowName ) ; writer . write ( '(' ) ; String delimiter = "" ; for ( CreateIndexColumn prop : columns ) { writer . write ( delimiter ) ; prop . toEPL ( writer ) ; delimiter = ", " ; } writer . write ( ')' ) ; }
target:  Renders the clause in textual representation.