code: public static String normalize(final CharSequence src, final Form form) {
      return normalize(src.toString(), form);
    }
docs: Normalize a sequence of char values. The sequence will be normalized according to the specified
  normalization from.
  
  @param src The sequence of char values to normalize.
  @param form The normalization form; one of {@link java.text.Normalizer.Form#NFC},
  {@link java.text.Normalizer.Form#NFD}, {@link java.text.Normalizer.Form#NFKC},
  {@link java.text.Normalizer.Form#NFKD}
  @return The normalized String
  @throws NullPointerException If <code>src</code> or <code>form</code> is null.