public function execute()
{
if (!isset($this->options['class'])) {
throw new ConfigException('You must specify the class or file to update');
}
if (file_exists($this->options['class'])) {
$filename = $this->options['class'];
} else {
$versionClass = new \ReflectionClass($this->options['class']);
$filename = $versionClass->getFileName();
}
$this->updateFile($filename);
$this->confirmSuccess();
}