}

  /**
   * Returns a {@link Stream} containing the elements of the first stream, followed by the elements
   * of the second stream, and so on.
   *
   * <p>This is equivalent to {@code Stream.of(streams).flatMap(stream -> stream)}, but the returned
   * stream may perform better.
   *
   * @see Stream#concat(Stream, Stream)
   */

  }

  /**
   * Returns a {@link Stream} containing the elements of the first stream, followed by the elements
   * of the second stream, and so on.
   *
   * <p>This is equivalent to {@code Stream.of(streams).flatMap(stream -> stream)}, but the returned
   * stream may perform better.
   *
   * @see Stream#concat(Stream, Stream)
   */

  }

  /**
   * Concatenates multiple {@link CharSource} instances into a single source. Streams returned from
   * the source will contain the concatenated data from the streams of the underlying sources.
   *
   * <p>Only one underlying stream will be open at a time. Closing the concatenated stream will
   * close the open underlying stream.
   *
   * @param sources the sources to concatenate

    try (DirectoryStream<Path> stream = Files.newDirectoryStream(path)) {
      if (stream instanceof SecureDirectoryStream) {
        SecureDirectoryStream<Path> sds = (SecureDirectoryStream<Path>) stream;
        exceptions = deleteDirectoryContentsSecure(sds);
      } else {
        checkAllowsInsecure(path, options);
        exceptions = deleteDirectoryContentsInsecure(stream);
      }
    } catch (IOException e) {

    try (DirectoryStream<Path> stream = Files.newDirectoryStream(path)) {
      if (stream instanceof SecureDirectoryStream) {
        SecureDirectoryStream<Path> sds = (SecureDirectoryStream<Path>) stream;
        exceptions = deleteDirectoryContentsSecure(sds);
      } else {
        checkAllowsInsecure(path, options);
        exceptions = deleteDirectoryContentsInsecure(stream);
      }
    } catch (IOException e) {

 * well.
 *
 * <h3>Java 8+ users</h3>
 *
 * <p>If you are using Java 8+, this class is now obsolete. Most of its functionality is now
 * provided by {@link java.util.stream.Stream Stream} and by {@link Comparator} itself, and the rest
 * can now be found as static methods in our new {@link Comparators} class. See each method below

 * well.
 *
 * <h3>Java 8+ users</h3>
 *
 * <p>If you are using Java 8+, this class is now obsolete. Most of its functionality is now
 * provided by {@link java.util.stream.Stream Stream} and by {@link Comparator} itself, and the rest
 * can now be found as static methods in our new {@link Comparators} class. See each method below

     * @return an {@link Optional} containing the file path, or empty if not set
     */
    @Nonnull
    Optional<String> logFile();

    /**
     * Returns whether raw streams should be logged.
     *
     * @return a boolean indicating whether raw streams should be logged
     */
    @Nonnull
    Optional<Boolean> rawStreams();

    /**
     * Returns the color setting for console output.
     *

    }
  }

  /**
   * Returns a stream over the values in this array, in order.
   *
   * @since NEXT (but since 22.0 in the JRE flavor)
   */
  @SuppressWarnings("Java7ApiChecker")
  // If users use this when they shouldn't, we hope that NewApi will catch subsequent stream calls
  @IgnoreJRERequirement
  public LongStream stream() {
    return Arrays.stream(array, start, end);
  }

import static java.lang.Double.isNaN;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import java.util.Iterator;
import java.util.stream.DoubleStream;
import java.util.stream.IntStream;
import java.util.stream.LongStream;

/**
 * A mutable object which accumulates double values and tracks some basic statistics over all the