7      * @param HTMLPurifier_Definition $def
11     public function add($def, $config)  argument
13         if (!$this->checkDefType($def)) {
23         return $this->_write($file, serialize($def), $config);
27      * @param HTMLPurifier_Definition $def
31     public function set($def, $config)  argument
33         if (!$this->checkDefType($def)) {
40         return $this->_write($file, serialize($def), $config);
44      * @param HTMLPurifier_Definition $def
48     public function replace($def, $config)  argument
50         if (!$this->checkDefType($def)) {
60         return $this->_write($file, serialize($def), $config);