original_string: public function setTimestamp($timestamp = 0)
      {
          $this->timestamp = $timestamp;
          if ($timestamp === 0) {
              $this->timestamp = $this->generateTimestamp();
          }
          return $this;
      }
code: public function setTimestamp($timestamp = 0)
      {
          $this->timestamp = $timestamp;
          if ($timestamp === 0) {
              $this->timestamp = $this->generateTimestamp();
          }
          return $this;
      }
code_tokens: public function setTimestamp ( $ timestamp = 0 ) { $ this -> timestamp = $ timestamp ; if ( $ timestamp === 0 ) { $ this -> timestamp = $ this -> generateTimestamp ( ) ; } return $ this ; }
docstring: Method to set the timestamp parameter for the signature
  
  @param int $timestamp
docstring_tokens: Method to set the timestamp parameter for the signature