presto-parser/src/main/java/io/prestosql/sql/SqlFormatter.java/SqlFormatter/appendAliasColumns
class SqlFormatter:    private static void appendAliasColumns(StringBuilder builder, List<Identifier> columns)
    {
        if ((columns != null) && (!columns.isEmpty())) {
            String formattedColumns = columns.stream()
                    .map(ExpressionFormatter::formatExpression)
                    .collect(Collectors.joining(", "));

            builder.append(" (")
                    .append(formattedColumns)
                    .append(')');
        }
    }