original_string: public function lastModified($modified = null)
      {
          if ($modified && $modified > $this->last_modified) {
              $this->last_modified = $modified;
          }
  
          return $this->last_modified;
      }
code: public function lastModified($modified = null)
      {
          if ($modified && $modified > $this->last_modified) {
              $this->last_modified = $modified;
          }
  
          return $this->last_modified;
      }
code_tokens: public function lastModified ( $ modified = null ) { if ( $ modified && $ modified > $ this -> last_modified ) { $ this -> last_modified = $ modified ; } return $ this -> last_modified ; }
docstring: Get or set last modification time.
  
  @param int $modified
  
  @return int|null
docstring_tokens: Get or set last modification time .