public static function get_presets($columns_count = null, $preset_index = null)
{
if (!self::$presets) {
self::init_presets();
}
$presets = self::$presets;
if (null !== $columns_count) {
$presets = $presets[$columns_count];
}
if (null !== $preset_index) {
$presets = $presets[$preset_index];
}
return $presets;
}