original_string: public function validateFile(FileInfo $fileInfo, $new_filename = null)
      {
          $file_path = $fileInfo->getFilePath(true);
  
          if (!is_dir($file_path)) {
              $fm = new Filesystem();
              $tmp_dir = $this->createTmpDir($fm);
              $fm->copy($file_path, $tmp_dir . FileManager::DS . $fileInfo->getFilename());
  
              if (!is_null($new_filename)) {
                  $new_filename = basename($new_filename);
                  $fm->rename($tmp_dir . FileManager::DS . $fileInfo->getFilename(),
                      $tmp_dir . FileManager::DS . $new_filename);
              }
  
              $this->checkFileType($fm, $tmp_dir);
          }
      }
code: public function validateFile(FileInfo $fileInfo, $new_filename = null)
      {
          $file_path = $fileInfo->getFilePath(true);
  
          if (!is_dir($file_path)) {
              $fm = new Filesystem();
              $tmp_dir = $this->createTmpDir($fm);
              $fm->copy($file_path, $tmp_dir . FileManager::DS . $fileInfo->getFilename());
  
              if (!is_null($new_filename)) {
                  $new_filename = basename($new_filename);
                  $fm->rename($tmp_dir . FileManager::DS . $fileInfo->getFilename(),
                      $tmp_dir . FileManager::DS . $new_filename);
              }
  
              $this->checkFileType($fm, $tmp_dir);
          }
      }
code_tokens: public function validateFile ( FileInfo $ fileInfo , $ new_filename = null ) { $ file_path = $ fileInfo -> getFilePath ( true ) ; if ( ! is_dir ( $ file_path ) ) { $ fm = new Filesystem ( ) ; $ tmp_dir = $ this -> createTmpDir ( $ fm ) ; $ fm -> copy ( $ file_path , $ tmp_dir . FileManager :: DS . $ fileInfo -> getFilename ( ) ) ; if ( ! is_null ( $ new_filename ) ) { $ new_filename = basename ( $ new_filename ) ; $ fm -> rename ( $ tmp_dir . FileManager :: DS . $ fileInfo -> getFilename ( ) , $ tmp_dir . FileManager :: DS . $ new_filename ) ; } $ this -> checkFileType ( $ fm , $ tmp_dir ) ; } }
docstring: Validate the files to check if they have a valid file type
  
  @param FileInfo    $fileInfo
  @param null|string $new_filename
docstring_tokens: Validate the files to check if they have a valid file type