original_string: public function setId($id = null)
      {
          $this->id = ($id !== null) ? $id : SecureKey::generate();
  
          return $this;
      }
code: public function setId($id = null)
      {
          $this->id = ($id !== null) ? $id : SecureKey::generate();
  
          return $this;
      }
code_tokens: public function setId ( $ id = null ) { $ this -> id = ( $ id !== null ) ? $ id : SecureKey :: generate ( ) ; return $ this ; }
docstring: Set token ID
  
  @param string $id Token ID
  
  @return self
docstring_tokens: Set token ID