code: public MethodDoc findMatchingMethod(MethodDoc method, MethodFinder mf) {
  
          // Look in this class's interface set
          MethodDoc md = findMatchingInterfaceMethod(method, mf);
  
          if (md != null) {
              return md;
          }
  
          // Look in this class's superclass ancestry
          ClassDoc superClass = getSuperclass();
          if (superClass != null) {
  
              md = superClass.getMatchingMethod(method, mf);
              if (md != null) {
                  return md;
              }
  
              return superClass.findMatchingMethod(method, mf);
          }
  
          return null;
      }
docs: Find a MethodDoc with a name and signature
  matching that of the specified MethodDoc and accepted by the
  specified MethodFinder.  This method searches the interfaces and
  super class ancestry of the class represented by this ClassDoc for
  a matching method.