buildExpression(ArithmeticOperator::add()); } /** * Subtract. * * @return ExpressionOperator */ public function subtract() { return $this->buildExpression(ArithmeticOperator::subtract()); } /** * Multiply. * * @return ExpressionOperator */ public function multiply() { return $this->buildExpression(ArithmeticOperator::multiply()); } /** * Divide. * * @return ExpressionOperator */ public function divide() { return $this->buildExpression(ArithmeticOperator::divide()); } /** * Modulo. * * @return ExpressionOperator */ public function modulo() { return $this->buildExpression(ArithmeticOperator::modulo()); } }