/**
* Get the history of each field in this container. May need to populate the history
*
* @param boolean $as_array. Defaults to false in which case results are instances of I2CE_Entry, otherwise reusults are associative arrays
* @returns array index by field names
*/
public function getHistory($as_array = false)
{
$history = parent::getHistory($as_array);
$parentHistory = $this->parentField->getHistory($as_array);
if (is_array($parentHistory) && count($parentHistory) > 0) {
$history['parent'] = $parentHistory;
}
return $history;
}