impl xs opti w3c dom DOMException w3c dom Text defaulttext nodeimpl text getdata domexception setdata data domexception domexception domexception.not_supported_err getlength substringdata offset count domexception domexception domexception.not_supported_err appenddata arg domexception domexception domexception.not_supported_err insertdata offset arg domexception domexception domexception.not_supported_err deletedata offset count domexception domexception domexception.not_supported_err replacedata offset count arg domexception domexception domexception.not_supported_err text splittext offset domexception domexception domexception.not_supported_err iselementcontentwhitespace domexception domexception.not_supported_err getwholetext domexception domexception.not_supported_err text replacewholetext content domexception domexception domexception.not_supported_err