Add a list directory method to the S3 persistor

GitOrigin-RevId: 6ecff3eb457dc2168ca49ff9409bb09fa932781c

libraries/object-persistor/src/PerProjectEncryptedS3Persistor.js

@@ -33,6 +33,10 @@ const AES256_KEY_LENGTH = 32
  * @property {() => Promise<Array<RootKeyEncryptionKey>>} getRootKeyEncryptionKeys
  */
 
+/**
+ * @typedef {import('./types').ListDirectoryResult} ListDirectoryResult
+ */
+
 /**
  * Helper function to make TS happy when accessing error properties
  * AWSError is not an actual class, so we cannot use instanceof.
@@ -391,9 +395,9 @@ class PerProjectEncryptedS3Persistor extends S3Persistor {
  * A general "cache" for project keys is another alternative. For now, use a helper class.
  */
 class CachedPerProjectEncryptedS3Persistor {
-  /** @type SSECOptions */
+  /** @type SSECOptions  */
   #projectKeyOptions
-  /** @type PerProjectEncryptedS3Persistor */
+  /** @type PerProjectEncryptedS3Persistor  */
   #parent
 
   /**
@@ -424,6 +428,16 @@ class CachedPerProjectEncryptedS3Persistor {
     return await this.#parent.getObjectSize(bucketName, path)
   }
 
+  /**
+   *
+   * @param {string} bucketName
+   * @param {string} path
+   * @return {Promise<ListDirectoryResult>}
+   */
+  async listDirectory(bucketName, path) {
+    return await this.#parent.listDirectory(bucketName, path)
+  }
+
   /**
    * @param {string} bucketName
    * @param {string} path