/** * Creates an instance of binary expression node, representing the construction: subject + value * * @param mixed $subject logical subject * @param mixed $value value to add to the subject * * SQL example: * @code * // "cost" + 2 * Expression::add("cost", 2); * @endcode * @return BinaryExpression */ static function add($subject, $value) { return new BinaryExpression($subject, BinaryLogicalOperator::add(), $value); }