# File lib/aws/core/xml/grammar.rb, line 114
        def parse_customization_item item
          case item
          when Symbol
            [:method, item, []]
          when Hash
            (method, arg) = item.to_a.first
            if method.kind_of?(Symbol)
              [:method, method, [arg].flatten]
            else
              [:element, method, arg]
            end
          end
        end