Model/Base/CustomerGroup.php
public function moveToTop(ConnectionInterface $con = null)
    {
        if ($this->isFirst()) {
            return $this;
        }

        return $this->moveToRank(1, $con);
    }
public function moveToTop(ConnectionInterface $con = null)
    {
        if ($this->isFirst()) {
            return $this;
        }

        return $this->moveToRank(1, $con);
    }
public function moveToTop ( ConnectionInterface $ con = null ) { if ( $ this -> isFirst ( ) ) { return $ this ; } return $ this -> moveToRank ( 1 , $ con ) ; }
Move the object to the top of the list

@param     ConnectionInterface $con optional connection

@return    ChildCustomerGroup the current object
Move the object to the top of the list