code: public function getLocalChanges(PackageInterface $package, $path)
      {
          if (!$this->hasMetadataRepository($path)) {
              return null;
          }
  
          $this->process->execute('svn status --ignore-externals', $output, $path);
  
          return preg_match('{^ *[^X ] +}m', $output) ? $output : null;
      }
docs: {@inheritDoc}