// Attribute
    // =========

    /** Client for interacting with the search engine. */
    @Resource
    protected SearchEngineClient searchEngineClient;

    /** Helper for building and parsing search queries. */
    @Resource
    protected QueryHelper queryHelper;

    /** Helper for executing search operations. */
    @Resource
    protected SearchHelper searchHelper;

Fixed a situation when, sometimes, the scheduler incorrectly placed a pod in the `unschedulable` queue instead of the `backoff` queue. This happened when some plugin previously declared the pod as `unschedulable` and then in a later attempt encounters some other error. Scheduling of that pod then got delayed by up to five minutes, after which periodic flushing moved the pod back into the `active` queue. ([#120334](https://github.com/kubernetes/kubernetes/pull/120334), [@pohly](https://github.com/pohly))...

    mostRecentRebuildFailed = false
  }

  /**
   * Returns a snapshot of the entry named [key], or null if it doesn't exist is not currently
   * readable. If a value is returned, it is moved to the head of the LRU queue.
   */
  @Synchronized
  @Throws(IOException::class)
  operator fun get(key: String): Snapshot? {
    initialize()

    checkNotClosed()
    validateKey(key)

          }
        });
  }

  /**
   * An immutable snapshot of the current state of the service. This class represents a consistent
   * snapshot of the state and therefore it can be used to answer simple queries without needing to
   * grab a lock.
   */
  // @Immutable except that Throwable is mutable (initCause(), setStackTrace(), mutable subclasses).
  private static final class StateSnapshot {
    /**

    // Standard lease states apply, plus directory-specific semantics:
    
    // READ_CACHING for directories means:
    // - Can cache directory enumeration results
    // - Can cache file existence queries
    // - Can cache basic file attributes
    
    // HANDLE_CACHING for directories means:
    // - Can keep directory handle open
    // - Can cache subdirectory handles
    

    threadPool.shutdown();
    threadPool.awaitTermination(300, SECONDS);

    // Since we're not doing any more cache operations, and the cache only expires/evicts when doing
    // other operations, the cache and the removal queue won't change from this point on.

    // Verify that each received removal notification was valid
    for (RemovalNotification<String, String> notification : removalListener) {

     *
     * This method replaces all occurrences of '*' with '\*' and
     * all occurrences of '?' with '\?' to ensure that these characters
     * are treated as literals rather than wildcard characters in queries.
     *
     * @param query the query string to escape
     * @return the escaped query string
     */
    public static String escapeWildcardQuery(final String query) {

                timeoutTask.cancel();
            }
        }

        return resultBuf.toString();

    }

    /**
     * Gets the count of currently running crawler jobs.
     * This method queries the scheduled jobs to count active crawler processes.
     * Used to enforce maximum concurrent crawler limits.
     *
     * @return the number of currently running crawler jobs
     */

    return new ImmutableSortedMap<K, V>(delegate, comparator);
  }

  /*
   * We don't permit nulls, but we wrap every comparator with nullsFirst().
   * Why? We want for queries like containsKey(null) to return false, but the
   * GWT SortedMap implementation that we delegate to throws
   * NullPointerException if the comparator does. Since our construction

    }
    connection.writeSynReset(id, rstStatusCode)
  }

  override fun cancel() {
    closeLater(ErrorCode.CANCEL)
  }

  /**
   * Abnormally terminate this stream. This enqueues a `RST_STREAM` frame and returns immediately.
   */
  fun closeLater(errorCode: ErrorCode) {
    if (!closeInternal(errorCode, null)) {
      return // Already closed.
    }