* @param stripes the minimum number of stripes (locks) required
   * @param supplier a {@code Supplier<L>} object to obtain locks from
   * @return a new {@code Striped<L>}
   */
  static <L> Striped<L> lazyWeakCustom(int stripes, Supplier<L> supplier) {
    return stripes < LARGE_LAZY_CUTOFF
        ? new SmallLazyStriped<L>(stripes, supplier)
        : new LargeLazyStriped<L>(stripes, supplier);
  }

  /**

/**
 * Static utility methods pertaining to {@code String} or {@code CharSequence} instances.
 *
 * @author Kevin Bourrillion
 * @since 3.0
 */
@GwtCompatible
public final class Strings {
  private Strings() {}

  /**
   * Returns the given string if it is non-null; the empty string otherwise.
   *
   * @param string the string to test and possibly return

		defer func() {
			sb.Reset()
			bytebufferpool.Put(sb)
		}()

		forward := ""
		if len(opts.ForwardTo) > 0 && strings.HasPrefix(opts.ForwardTo, current) {
			forward = strings.TrimPrefix(opts.ForwardTo, current)
			// Trim further directories and trailing slash.
			if idx := strings.IndexByte(forward, '/'); idx > 0 {
				forward = forward[:idx]
			}
		}

		if s.walkMu != nil {
			s.walkMu.Lock()
		}

        // Write short name length and short name
        byte[] shortNameBytes = Strings.getUNIBytes(shortName);
        buffer[68] = (byte) shortNameBytes.length; // shortNameLength
        System.arraycopy(shortNameBytes, 0, buffer, 70, Math.min(shortNameBytes.length, 24));

        // Write filename
        if (unicode) {
            byte[] filenameBytes = Strings.getUNIBytes(filename);

				(len(sparseMap)%2 == 1 && key != paxGNUSparseNumBytes) ||
				strings.Contains(value, ",") {
				return nil, ErrHeader
			}
			sparseMap = append(sparseMap, value)
		default:
			paxHdrs[key] = value
		}
	}
	if len(sparseMap) > 0 {
		paxHdrs[paxGNUSparseMap] = strings.Join(sparseMap, ",")
	}
	return paxHdrs, nil
}

    assertSame("xx", Strings.padStart("xx", 0, '-'));
    assertSame("xx", Strings.padStart("xx", 2, '-'));
  }

  public void testPadStart_somePadding() {
    assertEquals("-", Strings.padStart("", 1, '-'));
    assertEquals("--", Strings.padStart("", 2, '-'));
    assertEquals("-x", Strings.padStart("x", 2, '-'));
    assertEquals("--x", Strings.padStart("x", 3, '-'));

                byte[] uniBytes = Strings.getUNIBytes(original);
                String uniRoundTrip = Strings.fromUNIBytes(uniBytes, 0, uniBytes.length);

                // When - round trip through ASCII encoding (for ASCII-safe strings)
                if (original.chars().allMatch(c -> c < 128)) {
                    byte[] asciiBytes = Strings.getASCIIBytes(original);

	" abc\tdef\nghi\rjkl\fmno\vpqr\u0085stu\u00a0\n",
}

// Test that the word splitter returns the same data as strings.Fields.
func TestScanWords(t *testing.T) {
	for n, test := range wordScanTests {
		buf := strings.NewReader(test)
		s := NewScanner(buf)
		s.Split(ScanWords)
		words := strings.Fields(test)
		var wordCount int
		for wordCount = 0; wordCount < len(words); wordCount++ {
			if !s.Scan() {
				break

	for key := range headers {
		lkey := strings.ToLower(key)
		if !strings.HasPrefix(lkey, "x-amz-") {
			continue
		}
		keys = append(keys, lkey)
		keyval[lkey] = strings.Join(headers[key], ",")
	}
	sort.Strings(keys)
	var canonicalHeaders []string
	for _, key := range keys {
		canonicalHeaders = append(canonicalHeaders, key+":"+keyval[key])
	}
	return strings.Join(canonicalHeaders, "\n")
}

				m[v] = strings.Join(value, ",")
			} else {
				m[supportedHeader] = strings.Join(value, ",")
			}
		}
	}

	for key := range v {
		for _, prefix := range userMetadataKeyPrefixes {
			if !stringsHasPrefixFold(key, prefix) {
				continue
			}
			value, ok := nv[http.CanonicalHeaderKey(key)]
			if ok {
				m[key] = strings.Join(value, ",")
				break
			}
		}