Spliterator<? extends T> splitr = stream.spliterator();
      splitrsBuilder.add(splitr);
      characteristics &= splitr.characteristics();
      estimatedSize = LongMath.saturatedAdd(estimatedSize, splitr.estimateSize());
    }
    return StreamSupport.stream(
            CollectSpliterators.flatMap(
                splitrsBuilder.build().spliterator(),
                splitr -> (Spliterator<T>) splitr,

      Spliterator<? extends T> splitr = stream.spliterator();
      splitrsBuilder.add(splitr);
      characteristics &= splitr.characteristics();
      estimatedSize = LongMath.saturatedAdd(estimatedSize, splitr.estimateSize());
    }
    return StreamSupport.stream(
            CollectSpliterators.flatMap(
                splitrsBuilder.build().spliterator(),
                splitr -> (Spliterator<T>) splitr,

    return strategy.iterator(this, sequence);
  }

  /**
   * Splits {@code sequence} into string components and returns them as an immutable list. If you
   * want an {@link Iterable} which may be lazily evaluated, use {@link #split(CharSequence)}.
   *
   * @param sequence the sequence of characters to split
   * @return an immutable list of the segments split from the parameter
   * @since 15.0
   */

    return strategy.iterator(this, sequence);
  }

  /**
   * Splits {@code sequence} into string components and returns them as an immutable list. If you
   * want an {@link Iterable} which may be lazily evaluated, use {@link #split(CharSequence)}.
   *
   * @param sequence the sequence of characters to split
   * @return an immutable list of the segments split from the parameter
   * @since 15.0
   */

	return genSplit(s, sep, len(sep), n)
}

// Split slices s into all subslices separated by sep and returns a slice of
// the subslices between those separators.
// If sep is empty, Split splits after each UTF-8 sequence.
// It is equivalent to SplitN with a count of -1.
//
// To split around the first instance of a separator, see [Cut].
func Split(s, sep []byte) [][]byte { return genSplit(s, sep, 0, -1) }

        () -> COMMA_SPLITTER.withKeyValueSeparator(":").split("a:1,b:2,a:3"));
  }

  public void testMapSplitter_varyingTrimLevels() {
    MapSplitter splitter = COMMA_SPLITTER.trimResults().withKeyValueSeparator(Splitter.on("->"));
    Map<String, String> split = splitter.split(" x -> y, z-> a ");
    assertThat(split).containsEntry("x ", " y");
    assertThat(split).containsEntry("z", " a");
  }

typealias OperatingSystemToTestProjectPerformanceTestDurations = Map<Os, Map<String, List<PerformanceTestDuration>>>

const val MAX_TEST_PROJECTS_PER_BUCKET = 10
const val PERFORMANCE_TEST_SPLIT_DIRECTORY_NAME = "performance-test-splits"

data class PerformanceTestSpec(
    val performanceTestType: PerformanceTestType,
    val os: Os,
)

class StatisticsBasedPerformanceTestBucketProvider(
    private val model: CIBuildModel,

	if !isMysql() {
		return false
	}

	var version string
	if err := DB.Raw("SELECT VERSION()").Row().Scan(&version); err != nil {
		return false
	}

	base := strings.SplitN(strings.TrimSpace(version), "-", 2)[0]
	parts := strings.Split(base, ".")
	if len(parts) < 2 {
		return false
	}

	currentMajor, err := strconv.Atoi(parts[0])
	if err != nil {
		return false
	}

  /** Parses a single value. */
  private interface ValueParser {
    void parse(CacheBuilderSpec spec, String key, @Nullable String value);
  }

  /** Splits each key-value pair. */
  private static final Splitter KEYS_SPLITTER = Splitter.on(',').trimResults();

  /** Splits the key from the value. */
  private static final Splitter KEY_VALUE_SPLITTER = Splitter.on('=').trimResults();

  /** Map of names to ValueParser. */

  /** Parses a single value. */
  private interface ValueParser {
    void parse(CacheBuilderSpec spec, String key, @Nullable String value);
  }

  /** Splits each key-value pair. */
  private static final Splitter KEYS_SPLITTER = Splitter.on(',').trimResults();

  /** Splits the key from the value. */
  private static final Splitter KEY_VALUE_SPLITTER = Splitter.on('=').trimResults();

  /** Map of names to ValueParser. */