def html_attributes
      return @html_attributes if @html_attributes
      @html_attributes = @options.except *(WillPaginate::ViewHelpers.pagination_options.keys - [:class])
      # pagination of Post models will have the ID of "posts_pagination"
      if @options[:container] and @options[:id] === true
        @html_attributes[:id] = @collection.first.class.name.underscore.pluralize + '_pagination'
      end
      @html_attributes
    end
def html_attributes
      return @html_attributes if @html_attributes
      @html_attributes = @options.except *(WillPaginate::ViewHelpers.pagination_options.keys - [:class])
      # pagination of Post models will have the ID of "posts_pagination"
      if @options[:container] and @options[:id] === true
        @html_attributes[:id] = @collection.first.class.name.underscore.pluralize + '_pagination'
      end
      @html_attributes
    end
Returns the subset of +options+ this instance was initialized with that
 represent HTML attributes for the container element of pagination links.