/**
* Return an associative array of the data
*
* Skip the properties that start with an underscore as they are considered private
*
* @return array
*/
public function toArray()
{
$data = parent::toArray();
foreach (array_keys($data) as $key) {
if (substr($key, 0, 1) === '_') {
unset($data[$key]);
}
}
return $data;
}
