add_options_for_index_columns

# File activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb, line 1599
        def add_options_for_index_columns(quoted_columns, **options)
          if supports_index_sort_order?
            quoted_columns = add_index_sort_order(quoted_columns, **options)
          end

          quoted_columns
        end