SensioLabs\Deptrac\ConfigurationLoader::hasConfiguration PHP Method

    public function hasConfiguration()
    {
        return file_exists($this->configFilePathname);
    }

 protected function execute(InputInterface $input, OutputInterface $output)
 {
     $configurationLoader = new ConfigurationLoader('depfile.yml');
     if ($configurationLoader->hasConfiguration()) {
         $output->writeln('<error>depfile.yml already exists</error>');
         return 1;
     }
     $configurationLoader->dumpConfiguration();
     $output->writeln('depfile <info>dumped.</info>');
 }