* Retrieves related content for a given search query.
     * First checks for exact term matches, then evaluates regex patterns.
     * For regex matches, the query placeholder is replaced with the actual query.
     *
     * @param query the search query to find related content for
     * @return array of related content strings, or empty array if no matches found
     */
    public String[] getRelatedContents(final String query) {

        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);
            }

        });
    }

    /**
     * Processes virtual host configuration by applying a function to the matched virtual host key.
     *
     * @param <T> The return type of the function
     * @param func The function to apply to the virtual host key
     * @param defaultValue The default value to return if no virtual host matches
     * @return The result of applying the function, or the default value
     */

          } else if (labelBytesLeft > publicSuffixBytesLeft) {
            low = mid + end + 1
          } else {
            // Found a match.
            match = this.substring(mid, mid + publicSuffixLength).string(Charsets.UTF_8)
            break
          }
        }
      }
      return match
    }

    internal fun resetForTests() {
      instance = PublicSuffixDatabase(PublicSuffixList.Default)
    }
  }

                // Check field name follows convention
                assertTrue("Field name should match pattern: " + field.getName(), labelPattern.matcher(field.getName()).matches());

                // Check field value follows convention
                field.setAccessible(true);
                String value = (String) field.get(null);

    // to the server certificate.
    //   www.android.com  matches www.android.com
    //   www.android.com  matches www.android.com.
    //   www.android.com. matches www.android.com.
    //   www.android.com. matches www.android.com
    if (!hostname.endsWith(".")) {
      hostname += "."
    }
    if (!pattern.endsWith(".")) {
      pattern += "."

    }

    /**
     * Creates a path matcher function for path mapping.
     *
     * @param matcher the regex matcher
     * @param replacement the replacement string
     * @return the path matcher function
     */
    public BiFunction<String, Matcher, String> createPathMatcher(final Matcher matcher, final String replacement) { // for PathMapping

    }

    /**
     * Get a key match.
     *
     * @param id The ID of the key match.
     * @return An optional entity of the key match.
     */
    public OptionalEntity<KeyMatch> getKeyMatch(final String id) {
        return keyMatchBhv.selectByPK(id);
    }

    /**
     * Store a key match.
     *
     * @param keyMatch The key match to store.
     */

            final Pattern pattern = Pattern.compile(regex);
            System.getProperties()
                    .keySet()
                    .stream()
                    .filter(k -> k != null && pattern.matcher(k.toString()).matches())
                    .forEach(k -> addSystemProperty(cmdList, k.toString(), null, null));
        }
    }

    /**
     * Deletes the specified temporary directory.

        final Map<String, Object> map = new HashMap<String, Object>();

        map.put("data1", "test");
        assertTrue(docBoostMatcher.match(map));

        map.put("data1", "aaa test bbb");
        assertFalse(docBoostMatcher.match(map));

        map.put("data1", "hoge");
        assertFalse(docBoostMatcher.match(map));

        map.remove("data1");