void JSProcessingInstruction::putValueProperty(ExecState* exec, int token, JSValue* value)
{
    switch (token) {
    case DataAttrNum: {
        ProcessingInstruction* imp = static_cast<ProcessingInstruction*>(impl());
        ExceptionCode ec = 0;
        imp->setData(valueToStringWithNullCheck(exec, value), ec);
        setDOMException(exec, ec);
        break;
    }
    }
}