/** @brief Retrieves facet, creates it first if it deos not exist.
*
* When necessary, facet is created using default configuration parameters.
*
* @param $name [in] Facet identifier.
*
* @return facet with appropriate identifier.
*/
public function get_or_create_facet($name)
{
try {
return $this->get_facet($name);
} catch (OutOfBoundsException $e) {
$facet = new AfsFacet($name);
$facet->set_mode($this->get_default_facets_mode());
$this->add_facet($facet);
return $this->get_facet($name);
}
}
