+ /**
+  * @param {import('redis').RedisClientType} client
+  * @param {string} lockName
+  * @param {number} timeout
+  * @param {number} retryDelay
+  * @param {(timeout: number) => void} onLockAcquired
+  */
  async function acquireLock (client, lockName, timeout, retryDelay, onLockAcquired) {

+ /**
+  * @param {import('redis').RedisClientType} client
+  * @param {number} retryDelay
+  */
  function redisLock (client, retryDelay = DEFAULT_RETRY_DELAY) {

+     /**
+      * @param {string} lockName 
+      * @param {number} timeout
+      * @returns {Promise<string | undefined>}
+      */
      async function lock (lockName, timeout = DEFAULT_TIMEOUT) {