protected function _getMapping($cp, $id)
{
if (!isset($this->_dtd['codes'][$cp]) || !isset($this->_dtd['codes'][$cp][$id])) {
return false;
} else {
if (isset($this->_dtd['namespaces'][$cp])) {
return $this->_dtd['namespaces'][$cp] . ':' . $this->_dtd['codes'][$cp][$id];
} else {
return $this->_dtd['codes'][$cp][$id];
}
}
}