# File lib/aws/option_grammar.rb, line 191
          def apply(option, member_descriptors)
            super(option)
            member_option = option.member_option if option.respond_to?(:member_option)
            member_option ||= ListMember.new
            member_option = member_option.extend_with_config(*member_descriptors)
            MetaUtils.extend_method(option, :member_option) { member_option }
          end