question: public WordEntry addNewWord ( final String str ) { final String key = trimWord ( str ) ; WordEntry entry = words . get ( key ) ; if ( entry == null ) { entry = new WordEntry ( ) ; entry . setType ( new ExpressionType ( "" ) ) ; entry . setNormalized ( key ) ; words . put ( key , entry ) ; } else { logger . warn ( "word already known: " + str + " -> " + entry . getNormalized ( ) ) ; } return entry ; }
target:  Add a new word to the list in order to remember it later.