code: public static String convertClassNameToResourcePath(String className) {
          Assert.notNull(className, "Class name must not be null");
          return className.replace(PACKAGE_SEPARATOR, PATH_SEPARATOR);
      }
docs: Convert a "."-based fully qualified class name to a "/"-based resource path.
  
  @param className the fully qualified class name
  @return the corresponding resource path, pointing to the class