lib/components/dataInterface/connectors/generic/DataSource.php
public function getUnmappedLocalKeys()
    {
        $u = array_diff(array_keys($this->localModel->getMetaData()->columns), array_keys($this->_map));
        unset($u[$this->localPrimaryKeyName]);

        return $u;
    }
public function getUnmappedLocalKeys()
    {
        $u = array_diff(array_keys($this->localModel->getMetaData()->columns), array_keys($this->_map));
        unset($u[$this->localPrimaryKeyName]);

        return $u;
    }
Get unmapped local keys.

@return [[@doctodo return_type:getUnmappedLocalKeys]] [[@doctodo return_description:getUnmappedLocalKeys]]