def nodes
      document = Nokogiri::XML('')
      node_set = Nokogiri::XML::NodeSet.new(document)

      node_set += extract_route_nodes unless extract_route_nodes.empty?
      node_set += extract_track_nodes unless extract_track_nodes.empty?

      node_set
    end
def nodes
      document = Nokogiri::XML('')
      node_set = Nokogiri::XML::NodeSet.new(document)

      node_set += extract_route_nodes unless extract_route_nodes.empty?
      node_set += extract_track_nodes unless extract_track_nodes.empty?

      node_set
    end
Return nodes