return _instance;
    }

    // ===================================================================================
    //                                                                       Current DBDef
    //                                                                       =============
    @Override
    public String getProjectName() {
        return null;
    }

    @Override

import okhttp3.Address
import okhttp3.HttpUrl

/**
 * Policy on choosing which connection to use for an exchange and any retries that follow. This uses
 * the following strategies:
 *
 *  1. If the current call already has a connection that can satisfy the request it is used. Using
 *     the same connection for an initial exchange and its follow-ups may improve locality.
 *

  /**
   * Conditionally sets the count of an element to a new value, as described in {@link
   * #setCount(Object, int)}, provided that the element has the expected current count. If the
   * current count is not {@code oldCount}, no change is made.
   *
   * @param element the element to conditionally set the count of; may be null only if explicitly
   *     allowed by the implementation

   * thread.
   */
  private static final class ThreadConfinedTaskQueue {
    /**
     * This field is only used for identity comparisons with the current thread. Field assignments
     * are atomic, but do not provide happens-before ordering; however:
     *
     * <ul>
     *   <li>If this field's value == currentThread, we know that it's up to date, because write

      tasksExecutor.execute {
        taskRunner.assertLockNotHeld()
        require(currentTask == this)
        try {
          runnable.run()
          require(currentTask == this) { "unexpected current task: $currentTask" }
        } finally {
          taskRunner.withLock {
            activeThreads--
            startNextTask()
          }
        }
      }
    }
  }

  /**

  /** Discards all entries in the cache. */
  void invalidateAll();

  /** Returns the approximate number of entries in this cache. */
  long size();

  /**
   * Returns a current snapshot of this cache's cumulative statistics, or a set of default values if
   * the cache is not recording statistics. All statistics begin at zero and never decrease over the
   * lifetime of the cache.
   *

        return _instance;
    }

    // ===================================================================================
    //                                                                       Current DBDef
    //                                                                       =============
    @Override
    public String getProjectName() {
        return null;
    }

    @Override

    /**
     * Retrieves or creates a WebConfig entity based on the form's CRUD mode.
     *
     * @param form the form containing the web config data
     * @param username the username of the current user
     * @param currentTime the current timestamp
     * @return an optional WebConfig entity
     */
    public static OptionalEntity<WebConfig> getEntity(final CreateForm form, final String username, final long currentTime) {

 * apps use <a href="https://dagger.dev">Dagger</a>. For server code, common options include <a
 * href="https://github.com/google/guice/wiki/Motivation">Guice</a> and <a
 * href="https://docs.spring.io/spring-framework/docs/current/reference/html/core.html#beans-introduction">Spring</a>.
 * Frameworks typically offer a way to register multiple listeners independently and then request

     * @author koichik
     */
    protected static class DateFormatIterator implements Iterator<DateFormat> {

        /** Locale */
        protected final Locale locale;

        /** Index indicating the current style */
        protected int index;

        /**
         * Constructs an instance.
         *
         * @param locale
         *            Locale
         */