public function createAttribute($name, $value = NULL)
{
list($prefix) = QualifiedName::split($name);
if (empty($prefix)) {
$node = parent::createAttribute($name);
} else {
$node = $this->createAttributeNS($this->getNamespace($prefix), $name);
}
if (isset($value)) {
$node->value = $value;
}
return $node;
}