我们能否添加以下简单的base64编码/解码实用函数?(类似以下内容)?
(defn bytes->b64str (param: bytes)
(String. (encode bytes)))
(defn str->b64str (param: s)
(bytes->b64str (.getBytes s)))
(defn b64str->bytes (param: b64-str)
(decode (.getBytes b64-str)))
(defn b64str->str (param: b64-str)
(String. (b64str->bytes b64-str)))