include_required_css (Merb::AssetsMixin)

    # File lib/merb-assets/assets_mixin.rb, line 400
        def include_required_css(options = {})
          return '' if @required_css.nil? || @required_css.empty?
          @required_css.map do |req_css|
            if req_css.last.is_a?(Hash)
              css_include_tag(*(req_css[0..-2] + [options.merge(req_css.last)]))
            else
              css_include_tag(*(req_css + [options]))
            end
          end.join
        end