/** * @param string $format * @return null */ public function setFormat($format = 'wysiwyg') { if (!isset($this->loadedFields['format'])) { $this->loadProperties(); } $oldValue = null; if (array_key_exists('format', $this->loadedValues)) { $oldValue = $this->loadedValues['format']; } if ($oldValue === $format) { $this->format = $format; return; } return parent::setFormat($format); }