}
  }

  /**
   * Returns the next element in {@code iterator} or {@code defaultValue} if the iterator is empty.
   * The {@link Iterables} analog to this method is {@link Iterables#getFirst}.
   *
   * @param defaultValue the default value to return if the iterator is empty
   * @return the next element of {@code iterator} or the default value
   * @since 7.0

      try {
        delay(SMALL_DELAY_MS);
        done = true;
      } catch (InterruptedException ok) {
      }
      return Boolean.TRUE;
    }
  }

  //     /**
  //      * Analog of CheckedRunnable for RecursiveAction
  //      */
  //     public abstract class CheckedRecursiveAction extends RecursiveAction {
  //         protected abstract void realCompute() throws Throwable;

      return Iterators.getNext(iterator, defaultValue);
    }
  }

  /**
   * Returns the first element in {@code iterable} or {@code defaultValue} if the iterable is empty.
   * The {@link Iterators} analog to this method is {@link Iterators#getNext}.
   *
   * <p>If no default value is desired (and the caller instead wants a {@link
   * NoSuchElementException} to be thrown), it is recommended that {@code

      try {
        delay(SMALL_DELAY_MS);
        done = true;
      } catch (InterruptedException ok) {
      }
      return Boolean.TRUE;
    }
  }

  //     /**
  //      * Analog of CheckedRunnable for RecursiveAction
  //      */
  //     public abstract class CheckedRecursiveAction extends RecursiveAction {
  //         protected abstract void realCompute() throws Throwable;

      return Iterators.getNext(iterator, defaultValue);
    }
  }

  /**
   * Returns the first element in {@code iterable} or {@code defaultValue} if the iterable is empty.
   * The {@link Iterators} analog to this method is {@link Iterators#getNext}.
   *
   * <p>If no default value is desired (and the caller instead wants a {@link
   * NoSuchElementException} to be thrown), it is recommended that {@code

    }
  }

  /**
   * Returns the next element in {@code iterator} or {@code defaultValue} if the iterator is empty.
   * The {@link Iterables} analog to this method is {@link Iterables#getFirst}.
   *
   * @param defaultValue the default value to return if the iterator is empty
   * @return the next element of {@code iterator} or the default value
   * @since 7.0

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