code: private void removeOverriddenMethod(MethodDoc method) {
          ClassDoc overriddenClass = method.overriddenClass();
          if (overriddenClass != null) {
              for (int i = 0; i < methlist.size(); i++) {
                  ClassDoc cd = methlist.get(i).containingClass();
                  if (cd == overriddenClass || overriddenClass.subclassOf(cd)) {
                      methlist.remove(i);  // remove overridden method
                      return;
                  }
              }
          }
      }
docs: Search in the method list and check if it contains a method which
  is overridden by the method as parameter.  If found, remove the
  overridden method from the method list.
  
  @param method Is this method overriding a method in the method list.