public function relations($tableName = null, $assoc = false)
{
if (is_array($tableName)) {
$relations = $this->getKey('relations', $assoc);
if ($assoc) {
return array_intersect_key($relations, array_flip($tableName));
} else {
return (object) array_intersect_key((array) $relations, array_flip($tableName));
}
} elseif ($tableName !== null) {
return $assoc ? $this->getKey('relations', $assoc)[$tableName] : $this->getKey('relations', $assoc)->{$tableName};
}
return $this->getKey('relations', $assoc);
}