# File lib/aws/core/xml/grammar.rb, line 98
        def apply_customizations customizations
          customizations.each do |item|
            (type, identifier, args) = parse_customization_item(item)
            case type
            when :method
              validate_config_method(identifier)
              validate_args(identifier, args)
              send(identifier, *args)
            when :element
              element(identifier) do
                apply_customizations(args)
              end
            end
          end
        end