src/Resources/BaseDbTableResource.php
protected function getIdFieldsFromInfo($id_info)
    {
        $fields = [];
        foreach ($id_info as $info) {
            $fields[] = $info->name;
        }

        return $fields;
    }
protected function getIdFieldsFromInfo($id_info)
    {
        $fields = [];
        foreach ($id_info as $info) {
            $fields[] = $info->name;
        }

        return $fields;
    }
@param ColumnSchema[] $id_info

@return array