code: public RtfParagraphStyle getRtfParagraphStyle(String styleName) {
          if(!defaultsLoaded) {
              registerDefaultStyles();
          }
          if(this.styleMap.containsKey(styleName)) {
              return (RtfParagraphStyle) this.styleMap.get(styleName);
          } else {
              return null;
          }
      }
docs: Gets the RtfParagraphStyle with the given name. Makes sure that the defaults
  have been loaded.
  
  @param styleName The name of the RtfParagraphStyle to get.
  @return The RtfParagraphStyle with the given name or null.