}

    /**
     * Cleans up the temporary directory.
     */
    private void cleanupTempDirectory(Path tempDir) {
        try {
            Files.walk(tempDir)
                    .sorted(Comparator.reverseOrder())
                    .map(Path::toFile)
                    .forEach(File::delete);
        } catch (Exception e) {
            // Best effort cleanup - don't fail the whole operation
        }

   * declare it as {@code @Nullable ImmutableMapEntry[]} because our checker doesn't require newly
   * created arrays to have a {@code @Nullable} element type even when they're created directly with
   * {@code new ImmutableMapEntry[...]}, so it seems silly to insist on that only here.
   */
  @SuppressWarnings("unchecked") // Safe as long as the javadocs are followed

The process that happens when your API app calls the *external API* is named a "callback". Because the software that the external developer wrote sends a request to your API and then your API *calls back*, sending a request to an *external API* (that was probably created by the same developer).

   *
   *   o DIRTY lines track that an entry is actively being created or updated. Every successful
   *     DIRTY action should be followed by a CLEAN or REMOVE action. DIRTY lines without a matching
   *     CLEAN or REMOVE indicate that temporary files may need to be deleted.
   *
   *   o CLEAN lines track a cache entry that has been successfully published and may be read. A

META-INF/MANIFEST.MF Manifest-Version: 1.0 Created-By: 1.6.0_07 (Sun Microsystems Inc.)...

      "index" : {
        "creation_date" : "1509021060038",
        "number_of_shards" : "5",
        "number_of_replicas" : "1",
        "uuid" : "LRohRohXTCGxGdsabXPNnQ",
        "version" : {
          "created" : "6000051"
        },
        "provided_name" : "fess_log.favorite_log"
      }
    }
  }

      "index" : {
        "creation_date" : "1509021056434",
        "number_of_shards" : "5",
        "number_of_replicas" : "1",
        "uuid" : "Zrp1Be7PS1ySzKAjlrpICg",
        "version" : {
          "created" : "6000051"
        },
        "provided_name" : "fess_config.request_header"
      }
    }
  }

      "index" : {
        "creation_date" : "1509021049746",
        "number_of_shards" : "5",
        "number_of_replicas" : "1",
        "uuid" : "0xToIxg0R1KjZqA0ynv9PQ",
        "version" : {
          "created" : "6000051"
        },
        "provided_name" : "fess_config.bad_word"
      }
    }
  }

existing object replication are not marked as `PENDING` prior to replication.

 * certificate.
 *
 * Use of the chain cleaner is necessary to omit unexpected certificates that aren't relevant to
 * the TLS handshake and to extract the trusted CA certificate for the benefit of certificate
 * pinning.
 */
abstract class CertificateChainCleaner {
  @Throws(SSLPeerUnverifiedException::class)
  abstract fun clean(
    chain: List<Certificate>,
    hostname: String,
  ): List<Certificate>