new

# File actionpack/lib/action_dispatch/journey/visitors.rb, line 20
      def initialize(parts)
        @parts      = parts
        @children   = []
        @parameters = []

        parts.each_with_index do |object,i|
          case object
          when Journey::Format
            @children << i
          when Parameter
            @parameters << i
          end
        end
      end