code: @Deprecated
      public static String compose(String str, boolean compat, int options) {
          return getComposeNormalizer2(compat, options).normalize(str);
      }
docs: Compose a string.
  The string will be composed to according to the specified mode.
  @param str        The string to compose.
  @param compat     If true the string will be composed according to
  NFKC rules and if false will be composed according to
  NFC rules.
  @param options    The only recognized option is UNICODE_3_2
  @return String    The composed string
  @deprecated ICU 56 Use {@link Normalizer2} instead.
  @hide original deprecated declaration