public function get_transaction_start_backtrace() {
        if (!$this->transactions) {
            return null;
        }
        $lowesttransaction = end($this->transactions);
        return $lowesttransaction->get_backtrace();
    }
public function get_transaction_start_backtrace() {
        if (!$this->transactions) {
            return null;
        }
        $lowesttransaction = end($this->transactions);
        return $lowesttransaction->get_backtrace();
    }
public function get_transaction_start_backtrace ( ) { if ( ! $ this -> transactions ) { return null ; } $ lowesttransaction = end ( $ this -> transactions ) ; return $ lowesttransaction -> get_backtrace ( ) ; }
Returns transaction trace for debugging purposes.
@private to be used by core only
@return array or null if not in transaction.
Returns transaction trace for debugging purposes .