t.setDaemon(true);
            return t;
        };
        cleanupExecutor = Executors.newSingleThreadScheduledExecutor(threadFactory);

        // Add shutdown hook for cleanup
        Runtime.getRuntime().addShutdownHook(new Thread(this::shutdown, "ResourceManager-Shutdown"));

        startCleanupTask();
    }

    /**
     * Get the singleton instance
     *

import org.lastaflute.web.api.ApiFailureResource;
import org.lastaflute.web.login.exception.LoginUnauthorizedException;
import org.lastaflute.web.response.ApiResponse;
import org.lastaflute.web.response.JsonResponse;

/**
 * The hook for API failure.
 *
 * @author jflute
 */
public class FessApiFailureHook implements ApiFailureHook { // #change_it for handling API failure

                checkGoal.execute(context);

                // Verify that the Check-specific header is logged
                verify(context.logger).info("Maven Upgrade Tool - Check");
            } finally {
                // Clean up - delete all files in the directory first
                try {
                    Files.walk(tempDir)

jstream.KV{desc CMYK}
jstream.KV{colors [cyan magenta yellow black]}
```

## Installing 

```bash
go get github.com/bcicen/jstream
```

## Commandline

`jstream` comes with a cli tool for quick viewing of parsed values from JSON input:

```bash
jstream -d 1 < input.json
```

```json
{"colors":["red","green","blue"],"desc":"RGB"}
{"colors":["cyan","magenta","yellow","black"],"desc":"CMYK"}

		{"117Gn8rfHL2ACARPAhaFd0AGzic9pUbIA/5OCn5A", []int{3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1, 2}},
		{"SHØRT", []int{11, 12, 13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}},
		{"There are far too many object names, and far too few bucket names!", []int{15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14}},
		{"a/b/c/", []int{3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1, 2}},

                                        <la:link href="/admin/dict"
                                                 styleClass="btn btn-default btn-xs">
                                            <i class="fa fa-book" aria-hidden="true"></i>
                                            <la:message key="labels.dict_list_link"/>
                                        </la:link>

                                        <la:link href="/admin/dict"
                                                 styleClass="btn btn-default btn-xs">
                                            <i class="fa fa-book" aria-hidden="true"></i>
                                            <la:message key="labels.dict_list_link"/>
                                        </la:link>

                                        <la:link href="/admin/dict"
                                                 styleClass="btn btn-default btn-xs">
                                            <i class="fa fa-book" aria-hidden="true"></i>
                                            <la:message key="labels.dict_list_link"/>
                                        </la:link>

And whenever you output that data, even if the source had duplicates, it will be output as a set of unique items.

And it will be annotated / documented accordingly too.

## Nested Models { #nested-models }

Each attribute of a Pydantic model has a type.

But that type can itself be another Pydantic model.

  // Use fewer steps in the ListIteratorTester in ListListIteratorTester because it's slow in prod
  // mode.
  static int listListIteratorTesterNumIterations() {
    // TODO(hhchan): It's 4 in java.  Figure out why even 3 is too slow in prod mode.
    return 2;
  }

  // Use fewer steps in the IteratorTester in CollectionIteratorTester because it's slow in prod
  // mode.
  static int collectionIteratorTesterNumIterations() {
    return 3;