/**
*
* Sets a key in the data to null.
*
* @param string $key The requested data key.
*
* @return void
*
*/
public function __unset($key)
{
// if an accessor method exists, use it
if (!empty($this->_access_methods[$key]['unset'])) {
// use accessor method
$method = $this->_access_methods[$key]['unset'];
$this->{$method}();
$this->_setIsDirty();
} else {
// no accessor method; use parent method
parent::__unset($key);
}
}
