return (Charset) charsets.get (canonicalize (charsetName));
Charset cs = (Charset) charsets.get(canonicalNames.get(charsetName.toLowerCase())); if(cs == null && !extendedLoaded) { loadExtended(); cs = (Charset) charsets.get(canonicalNames.get(charsetName.toLowerCase())); } return cs;
  public Charset charsetForName (String charsetName)  {    return (Charset) charsets.get (canonicalize (charsetName));  }