cast_backend_name_to_module

# File activesupport/lib/active_support/xml_mini.rb, line 180
      def cast_backend_name_to_module(name)
        if name.is_a?(Module)
          name
        else
          require "active_support/xml_mini/#{name.downcase}"
          ActiveSupport.const_get("XmlMini_#{name}")
        end
      end