original_string: public function set_time($time = null) {
          if (empty($time)) {
              $this->time = time();
          } else {
              $this->time = $time;
          }
  
          return $this;
      }
code: public function set_time($time = null) {
          if (empty($time)) {
              $this->time = time();
          } else {
              $this->time = $time;
          }
  
          return $this;
      }
code_tokens: public function set_time ( $ time = null ) { if ( empty ( $ time ) ) { $ this -> time = time ( ) ; } else { $ this -> time = $ time ; } return $ this ; }
docstring: Set the time period of this instance.
  
  @param   int $time the unixtimestamp representing the date we want to view.
  @return  $this
docstring_tokens: Set the time period of this instance .