original_string: public function getExportFilename()
      {
          $host = php_uname('n');
          $default = $host . '_' . date('Y-m-d_H.i.s', time());
          $filename = array_get(
              $this->manifest,
              'storage.filename',
              array_get($this->manifest, 'storage.file', $default)
          );
  
          $filename = (empty($filename)) ? $default : $filename;
  
          if (strpos($filename, static::FILE_EXTENSION) === false) {
              $filename .= '.' . static::FILE_EXTENSION;
          }
  
          return $filename;
      }
code: public function getExportFilename()
      {
          $host = php_uname('n');
          $default = $host . '_' . date('Y-m-d_H.i.s', time());
          $filename = array_get(
              $this->manifest,
              'storage.filename',
              array_get($this->manifest, 'storage.file', $default)
          );
  
          $filename = (empty($filename)) ? $default : $filename;
  
          if (strpos($filename, static::FILE_EXTENSION) === false) {
              $filename .= '.' . static::FILE_EXTENSION;
          }
  
          return $filename;
      }
code_tokens: public function getExportFilename ( ) { $ host = php_uname ( 'n' ) ; $ default = $ host . '_' . date ( 'Y-m-d_H.i.s' , time ( ) ) ; $ filename = array_get ( $ this -> manifest , 'storage.filename' , array_get ( $ this -> manifest , 'storage.file' , $ default ) ) ; $ filename = ( empty ( $ filename ) ) ? $ default : $ filename ; if ( strpos ( $ filename , static :: FILE_EXTENSION ) === false ) { $ filename .= '.' . static :: FILE_EXTENSION ; } return $ filename ; }
docstring: Returns the filename for export file.
  
  @return string
docstring_tokens: Returns the filename for export file .