code: public boolean addKeywords(String keywords) {
          try {
              return add(new Meta(Element.KEYWORDS, keywords));
  		} catch (DocumentException de) {
              throw new ExceptionConverter(de);
          }
      }
docs: Adds the keywords to a Document.
  
  @param keywords
  adds the keywords to the document
  @return <CODE>true</CODE> if successful, <CODE>false</CODE> otherwise