code: public String tag(final String word, final String postag) {
      // lookup postag as value of the map
      String newPosTag = this.dictMap.get(word.toLowerCase());
      if (newPosTag == null) {
        newPosTag = postag;
      }
      return newPosTag;
    }
docs: /*
  (non-Javadoc)
  
  @see es.ehu.si.ixa.ixa.pipe.pos.dict.DictionaryTagger#tag(java.lang.String,
  java.lang.String)