original_string: public function moveToTop(ConnectionInterface $con = null)
      {
          if ($this->isFirst()) {
              return $this;
          }
  
          return $this->moveToRank(1, $con);
      }
code: public function moveToTop(ConnectionInterface $con = null)
      {
          if ($this->isFirst()) {
              return $this;
          }
  
          return $this->moveToRank(1, $con);
      }
code_tokens: public function moveToTop ( ConnectionInterface $ con = null ) { if ( $ this -> isFirst ( ) ) { return $ this ; } return $ this -> moveToRank ( 1 , $ con ) ; }
docstring: Move the object to the top of the list
  
  @param     ConnectionInterface $con optional connection
  
  @return    ChildCustomerGroup the current object
docstring_tokens: Move the object to the top of the list