code: def filtered
        return self if filters.empty?
  
        filtered_results = filters.each_with_object({}) do |(key, options), results|
          results[key] = filter(key, *options)
        end
  
        self.class.new(filtered_results)
      end
docs: Returns the raw data with all of the filters applied
  
   If no filters were added, this method simply returns self.
  
   @return [Muster::Results]
  
   @example
  
     results.add_filter(:select, :only => [:id, :name])
     results.add_dilter(:page, 1)
     results.filtered   #=> { 'select' => [:id, :name], 'page' => 1 }