/**
   * Returns the contained instance, which must be present. If the instance might be absent, use
   * {@link #or(Object)} or {@link #orNull} instead.
   *
   * <p><b>Comparison to {@code java.util.Optional}:</b> when the value is absent, this method
   * throws {@link IllegalStateException}, whereas the {@code java.util} counterpart throws {@link
   * java.util.NoSuchElementException NoSuchElementException}.
   *

# CORS (Cross-Origin Resource Sharing)

<a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS" class="external-link" target="_blank">CORS or "Cross-Origin Resource Sharing"</a> refers to the situations when a frontend running in a browser has JavaScript code that communicates with a backend, and the backend is in a different "origin" than the frontend.

## Origin

        this.beanDelimiter = beanDelimiter;
        return this;
    }

    /**
     * {@link Map}のデリミタを設定します。
     * <p>
     * JavaBeansから{@link Map}へ、あるいはその逆にコピーする際に、プロパティ名のデリミタを変更することが出来ます。
     * 例えばJavaBeans側のデリミタにアンダースコア、{@link Map}側のデリミタにピリオドを指定した場合、
     * コピー元とコピー先のプリパティ名は次のようになります。
     * </p>
     * <table border="1">

  @CheckForNull private ThreadFactory backingThreadFactory = null;

  /** Creates a new {@link ThreadFactory} builder. */
  public ThreadFactoryBuilder() {}

  /**
   * Sets the naming format to use when naming threads ({@link Thread#setName}) which are created
   * with this ThreadFactory.
   *
   * @param nameFormat a {@link String#format(String, Object...)}-compatible format String, to which

尽管如此，Uvicorn 目前仅与 asyncio 兼容，并且通常使用 <a href="https://github.com/MagicStack/uvloop" class="external-link" target="_blank">`uvloop`</a >, 它是`asyncio`的高性能替代品。

 * not be modifiable. When modification isn't supported, those methods will throw an {@link
 * UnsupportedOperationException}.
 *
 * <h3>Implementations</h3>
 *
 * <ul>
 *   <li>{@link ImmutableTable}
 *   <li>{@link HashBasedTable}
 *   <li>{@link TreeBasedTable}
 *   <li>{@link ArrayTable}
 *   <li>{@link Tables#newCustomTable Tables.newCustomTable}
 * </ul>
 *

    /** クラスローダ */
    protected ClassLoader classLoader;

    /**
     * for each構文で使用するために{@link ClassLoaderIterator}をラップした{@link Iterable}を返します。
     *
     * @param classLoader
     *            クラスローダ。{@literal null}であってはいけません
     * @return {@link ClassLoaderIterator}をラップした{@link Iterable}
     */
    public static Iterable<ClassLoader> iterable(final ClassLoader classLoader) {

 *     .create();
 * }</pre>
 *
 * <p>As a {@link Queue} it functions exactly as a {@link PriorityQueue}: its head element -- the
 * implicit target of the methods {@link #peek()}, {@link #poll()} and {@link #remove()} -- is
 * defined as the <i>least</i> element in the queue according to the queue's comparator. But unlike
 * a regular priority queue, the methods {@link #peekLast}, {@link #pollLast} and {@link

The [strings] package adds several functions that work with iterators:
- [Lines] returns an iterator over
  the newline-terminated lines in the string s.
- [SplitSeq] returns an iterator over
  all substrings of s separated by sep.
- [SplitAfterSeq] returns an iterator
  over substrings of s split after each instance of sep.
- [FieldsSeq] returns an iterator over
  substrings of s split around runs of whitespace characters,
  as defined by unicode.IsSpace.

import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * A {@link FutureTask} that also implements the {@link ListenableFuture} interface. Unlike {@code
 * FutureTask}, {@code ListenableFutureTask} does not provide an overrideable {@link
 * FutureTask#done() done()} method. For similar functionality, call {@link #addListener}.
 *