// Load persisted handles on startup
        loadPersistedHandles();
        
        // Schedule periodic persistence
        scheduler.scheduleAtFixedRate(this::persistHandles, 30, 30, TimeUnit.SECONDS);
    }
    
    public static class HandleInfo implements Serializable {
        private static final long serialVersionUID = 1L;
        
        private final String path;

This can be quite noticeable when using `docker compose`. See this Docker Compose FAQ section for more technical details: <a href="https://docs.docker.com/compose/faq/#why-do-my-services-take-10-seconds-to-recreate-or-stop" class="external-link" target="_blank">Why do my services take 10 seconds to recreate or stop?</a>.

#### Directory Structure { #directory-structure }

You should now have a directory structure like:

```
.
├── app

    /** Cache for storing group information to reduce API calls. */
    protected Cache<String, Pair<String[], String[]>> groupCache;

    /** Group cache expiry time in seconds. */
    protected long groupCacheExpiry = 10 * 60L;

    /** Use V2 endpoint. */
    protected boolean useV2Endpoint = true;

    /**
     * Initializes the Azure AD authenticator.

    /**
     * Gets the registration flags.
     *
     * @return the registration flags
     */
    public int getFlags() {
        return flags;
    }

    /**
     * Sets the timeout value in seconds.
     *
     * @param timeout the timeout value
     */
    public void setTimeout(int timeout) {
        this.timeout = timeout;
    }

    /**
     * Gets the timeout value.
     *

 *
 *     Runtime.getRuntime().addShutdownHook(new Thread() {
 *       public void run() {
 *         // Give the services 5 seconds to stop to ensure that we are responsive to shutdown
 *         // requests.
 *         try {
 *           manager.stopAsync().awaitStopped(5, TimeUnit.SECONDS);
 *         } catch (TimeoutException timeout) {
 *           // stopping timed out
 *         }
 *       }
 *     });

                    } finally {
                        latch.countDown();
                    }
                }).start();
            }

            latch.await(5, java.util.concurrent.TimeUnit.SECONDS);
            assertEquals(5, successCount.get(), "All concurrent calls should succeed");
        }
    }

    assertThat(Adapters.parseGeneralizedTime("19920622123421Z"))
      .isEqualTo(date("1992-06-22T12:34:21.000+0000").time)
  }

  @Disabled("fractional seconds are not implemented")
  @Test
  fun `parse generalized time with fractional seconds`() {
    assertThat(Adapters.parseGeneralizedTime("19920722132100.3Z"))
      .isEqualTo(date("1992-07-22T13:21:00.300+0000").time)
  }

 * efficient `max-age=0` directive instead:
 *
 * ```java
 * Request request = new Request.Builder()
 *     .cacheControl(new CacheControl.Builder()
 *         .maxAge(0, TimeUnit.SECONDS)
 *         .build())
 *     .url("http://publicobject.com/helloworld.txt")
 *     .build();
 * ```
 *
 * ## Force a Cache Response
 *

      " hostAddress=${route.socketAddress}" +
      " cipherSuite=${handshake?.cipherSuite ?: "none"}" +
      " protocol=$protocol}"

  companion object {
    const val IDLE_CONNECTION_HEALTHY_NS = 10_000_000_000 // 10 seconds.

    fun newTestConnection(
      taskRunner: TaskRunner,
      connectionPool: RealConnectionPool,
      route: Route,
      socket: JavaNetSocket,
      idleAtNs: Long,
    ): RealConnection {

                        }
                    }
                } finally {
                    latch.countDown();
                }
            });
        }

        assertTrue(latch.await(10, TimeUnit.SECONDS), "Concurrent ops should complete");
        executor.shutdown();

        assertEquals(threadCount * operationsPerThread, successCount.get(), "All operations should succeed");
    }

    @Test