presto-parser/src/main/java/io/prestosql/sql/ExpressionFormatter.java/Formatter/visitArithmeticBinary
class Formatter:        @Override
        protected String visitArithmeticBinary(ArithmeticBinaryExpression node, Void context)
        {
            return formatBinaryExpression(node.getOperator().getValue(), node.getLeft(), node.getRight());
        }