final int realGroupCount = pacStream.readInt();
                if (realGroupCount != groupCount) {
                    throw new PACDecodingException("Invalid number of groups in PAC expect" + groupCount + " have " + realGroupCount);
                }
                groups = new PacGroup[groupCount];
                for (int i = 0; i < groupCount; i++) {
                    pacStream.align(4);

        if (matcher.find()) {
            if (logger.isDebugEnabled()) {
                logger.debug("Matched: {}", matcher.group());
            }
            if (matcher.groupCount() > 0) {
                return matcher.group(1);
            }
        }
        return null;
    }

    /**
     * Replaces credentials in the given value.

     * @return the extracted value, or null if no match
     */
    protected String getValue(final Pattern pattern, final String line) {
        final Matcher m = pattern.matcher(line);
        if (m.matches() && m.groupCount() > 0) {
            return m.group(1);
        }
        return null;
    }

    /**
     * Strips comments from a line (everything after '#' character).

  }

  public void testGet_regex() {
    assertEquals(Pattern.compile("").pattern(), ArbitraryInstances.get(Pattern.class).pattern());
    assertEquals(0, ArbitraryInstances.get(MatchResult.class).groupCount());
  }

  public void testGet_usePublicConstant() {
    assertSame(WithPublicConstant.INSTANCE, ArbitraryInstances.get(WithPublicConstant.class));
  }

  public void testGet_useFirstPublicConstant() {

  }

  public void testGet_regex() {
    assertEquals(Pattern.compile("").pattern(), ArbitraryInstances.get(Pattern.class).pattern());
    assertEquals(0, ArbitraryInstances.get(MatchResult.class).groupCount());
  }

  public void testGet_usePublicConstant() {
    assertSame(WithPublicConstant.INSTANCE, ArbitraryInstances.get(WithPublicConstant.class));
  }

  public void testGet_useFirstPublicConstant() {

		for g, pslc := range groupDescStats {
			var gds []madmin.GroupDesc
			groupCount := 0
			for _, ps := range pslc {
				groupCount++
				sum := info.StatsSummary[ps.DeploymentID]
				sum.TotalGroupsCount++
				info.StatsSummary[ps.DeploymentID] = sum
				gds = append(gds, ps.GroupDesc)
			}
			gdMismatch := !isGroupDescReplicated(groupCount, numSites, gds)
			for _, ps := range pslc {