docs: public static String addResourcePathToPackagePath(Class<?> clazz, String resourceName) {
  		Assert.notNull(resourceName, "Resource name must not be null");
  		if (!resourceName.startsWith("/")) {
  			return classPackageAsResourcePath(clazz) + "/" + resourceName;
  		}
  		return classPackageAsResourcePath(clazz) + resourceName;
  	}