/**
* Prepare the container by loading the grid and parse it as subcolumns definition.
*
* @param Grid $grid The grid object.
*
* @return array
*/
protected function prepareContainer(Grid $grid)
{
$container = array();
foreach ($grid->getColumns() as $column) {
$container[] = array(implode(' ', $column));
}
return $container;
}
