import org.jspecify.annotations.Nullable;

/**
 * Executor ensuring that all Runnables submitted are executed in order, using the provided
 * Executor, and sequentially such that no two will ever be running at the same time.
 *
 * <p>Tasks submitted to {@link #execute(Runnable)} are executed in FIFO order.
 *
 * <p>The execution of tasks is done by one thread as long as there are tasks left in the queue.

import org.jspecify.annotations.Nullable;

/**
 * Executor ensuring that all Runnables submitted are executed in order, using the provided
 * Executor, and sequentially such that no two will ever be running at the same time.
 *
 * <p>Tasks submitted to {@link #execute(Runnable)} are executed in FIFO order.
 *
 * <p>The execution of tasks is done by one thread as long as there are tasks left in the queue.

The same models are shared among requests, so, it's not one model per request, or one per user or something similar.

Let's imagine that loading the model can **take quite some time**, because it has to read a lot of **data from disk**. So you don't want to do it for every request.

        },
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "type": "query"
      }
    ]
  },
  "time": {
    "from": "now-1h",
    "to": "now"
  },
  "timepicker": {
    "refresh_intervals": [
      "10s",
      "30s",
      "1m",
      "5m",
      "15m",
      "30m",
      "1h",

     */
    private static final Set<String> DEFAULT_ALLOWED_PATTERNS = Set.of(
        "java.lang.*",
        "java.util.*",
        "java.time.*",
        "java.math.*",
        "org.codelibs.*",
        "[*" // Allow arrays
    );

    /**
     * Default ObjectInputFilter that only allows safe classes to be deserialized.

        smbTree.close();

        verify(smbTree).close();
    }

    /**
     * Test for unwrap preserving type safety.
     * Verifies that unwrap maintains type safety at compile time.
     */
    @Test
    void testUnwrap_typeSafety() {
        CustomSmbTree customTree = mock(CustomSmbTree.class);
        when(smbTree.unwrap(CustomSmbTree.class)).thenReturn(customTree);

   * URLs</a>. (<a href="https://url.spec.whatwg.org/#path-state">If the escaper were to leave these
   * characters unescaped, they would be escaped by the consumer at parse time, anyway.</a>)
   * Additionally, the escaper escapes the slash character ("/"). While slashes are acceptable in
   * URL paths, they are considered by the specification to be separators between "path segments."

      return super.containsAll(targets);
    }

    /*
     * If targets is a sorted set with the same comparator, containsAll can run
     * in O(n) time stepping through the two collections.
     */
    Iterator<E> thisIterator = iterator();

    Iterator<?> thatIterator = targets.iterator();
    // known nonempty since we checked targets.size() > 1

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.suggest.index;

import java.lang.management.ManagementFactory;
import java.time.ZonedDateTime;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ExecutorService;
import java.util.function.Supplier;

    a separate file or files, that is not Covered Software.

1.8. "License"
    means this document.

1.9. "Licensable"
    means having the right to grant, to the maximum extent possible,
    whether at the time of the initial grant or subsequently, any and
    all of the rights conveyed by this License.

1.10. "Modifications"
    means any of the following:

    (a) any file in Source Code Form that results from an addition to,