code: private String resolveDocByClass(String className) {
          String urlBase = doc.getProperty(className);
          if(urlBase != null) {
              return urlBase + className.replace(".", "/")+".html";
          }
          return null;
      }
docs: Return JavaDoc URL for class.
  
  @param className Class name to find JavaDoc for.
  
  @return JavaDoc URL for class.