assertFalse(matcher.apply(s.charAt(0)));
    assertEquals(-1, matcher.indexIn(s));
    assertEquals(-1, matcher.indexIn(s, 0));
    assertEquals(-1, matcher.indexIn(s, 1));
    assertEquals(-1, matcher.lastIndexIn(s));
    assertFalse(matcher.matchesAnyOf(s));
    assertFalse(matcher.matchesAllOf(s));
    assertTrue(matcher.matchesNoneOf(s));

    assertSame(s, matcher.removeFrom(s));

    assertFalse(matcher.matches(s.charAt(0)));
    assertFalse(matcher.apply(s.charAt(0)));
    assertFalse(matcher.test(s.charAt(0)));
    assertEquals(-1, matcher.indexIn(s));
    assertEquals(-1, matcher.indexIn(s, 0));
    assertEquals(-1, matcher.indexIn(s, 1));
    assertEquals(-1, matcher.lastIndexIn(s));
    assertFalse(matcher.matchesAnyOf(s));
    assertFalse(matcher.matchesAllOf(s));

      var month = -1
      var year = -1
      val matcher = TIME_PATTERN.matcher(s)

      while (pos < limit) {
        val end = dateCharacterOffset(s, pos + 1, limit, true)
        matcher.region(pos, end)

        when {
          hour == -1 && matcher.usePattern(TIME_PATTERN).matches() -> {
            hour = matcher.group(1).toInt()
            minute = matcher.group(2).toInt()

        final Pattern pattern = Pattern.compile("test");
        final Matcher matcher = pattern.matcher("test");
        final BiFunction<String, Matcher, String> pathMatcher = pathMappingHelper.createPathMatcher(matcher, "function:encodeUrl");

        String result = pathMatcher.apply("http://example.com/test path", matcher);
        assertEquals("http://example.com/test+path", result);
    }

        final Matcher matcher = pattern.matcher(value);
        while (matcher.find()) {
            final String key = matcher.group(2);
            String replacement = System.getProperty(key);
            if (replacement == null) {
                replacement = matcher.group(1);
            }

   * https://cs.android.com/android/platform/superproject/+/android-2.3.7_r1:libcore/luni/src/main/java/java/util/regex/Matcher.java;l=550;drc=5850271b4ab93ebc27c1d49169a348c6be3c7f04
   */
  private static MatchResult createMatchResult() {
    Matcher matcher = Pattern.compile(".").matcher("X");
    matcher.find();
    return matcher.toMatchResult();
  }

  private static final ClassToInstanceMap<Object> DEFAULTS =

        int lineNum = 0;
        for (final String line : values) {
            final Matcher matcher = pattern.matcher(line);
            if (matcher.matches()) {
                if (lineNum == 0) {
                    lineNum = Integer.parseInt(matcher.group(1));
                    list.clear();
                }
                list.add(matcher.group(2));
            } else {
                list.add(line);
            }

      expectFailure(platformMatches(LOOM_PROPERTY))
    }

    private fun expectFailure(
      versionMatcher: Matcher<out Any>,
      failureMatcher: Matcher<out Any> = anything(),
    ) {
      versionChecks.add(Pair(versionMatcher, failureMatcher))
    }

    fun platformMatches(platform: String): Matcher<Any> =
      object : BaseMatcher<Any>() {
        override fun describeTo(description: Description) {

    Pattern pattern = Pattern.compile("Multiple entries with same key: four=(.*) and four=(.*)");
    assertThat(expected).hasMessageThat().matches(pattern);
    Matcher matcher = pattern.matcher(expected.getMessage());
    assertThat(matcher.matches()).isTrue();
    assertThat(matcher.group(1)).isNotEqualTo(matcher.group(2));
  }

  public void testOf() {
    assertMapEquals(ImmutableMap.of("one", 1), "one", 1);

        }

        for (final Pattern pattern : includedDocUrlPatterns) {
            if (pattern.matcher(input).matches()) {
                return Constants.TRUE;
            }
        }

        for (final Pattern pattern : excludedDocUrlPatterns) {
            if (pattern.matcher(input).matches()) {
                return Constants.FALSE;
            }
        }

        return Constants.TRUE;
    }