FeedFunction::__construct PHP Метод

        public function __construct($operator = null, $lhsOperand = null, $rhsOperand = null, $functionString = null)
        {
            $this->operator = $operator;
            $this->lhsOperand = $lhsOperand;
            $this->rhsOperand = $rhsOperand;
            $this->functionString = $functionString;
        }