public function describeMismatch($item, Description $description)
{
$value = '';
if (!$this->_not) {
$description->appendText('was not set');
} else {
$property = $this->_property;
if (is_array($item)) {
$value = $item[$property];
} elseif (is_object($item)) {
$value = $item->{$property};
} elseif (is_string($item)) {
$value = $item::${$property};
}
parent::describeMismatch($value, $description);
}
}
