Method indexIn

guava/src/com/google/common/base/CharMatcher.java:544–546

Returns the index of the first matching BMP character in a character sequence, or {@code -1} if no matching character is present. <p>The default implementation iterates over the sequence in forward order calling {@link #matches} for each character. @param sequence the character sequence to examine

(CharSequence sequence)

   * @return an index, or {@code -1} if no character matches
   */
  public int indexIn(CharSequence sequence) {
    return indexIn(sequence, 0);
  }

  /**
   * Returns the index of the first matching BMP character in a character sequence, starting from a