static HttpVfs of(ClassLoader classLoader, String rootDir) {
        return new ClassPathHttpVfs(requireNonNull(classLoader, "classLoader"),
                                    requireNonNull(rootDir, "rootDir"));
    }
Creates a new {@link HttpVfs} with the specified {@code rootDir} in the current class path.
core/src/main/java/com/linecorp/armeria/server/file/HttpVfs.java