Method namedGroups

java/com/google/re2j/Pattern.java:331–333

Return a map of the capturing groups in this matcher's pattern, where key is the name and value is the index of the group in the pattern.

()

   * is the index of the group in the pattern.
   */
  public Map<String, Integer> namedGroups() {
    return Collections.unmodifiableMap(re2.namedGroups);
  }

  Object readResolve() {
    // The deserialized version will be missing the RE2 instance, so we need to create a new,