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class Find
  include Supa::Representable

  define do
    namespace :jsonapi do
      attribute :version, getter: -> { '1.0' } # now
      attribute :version, '1.0'  # preferred
    end
  end
end

 class Find
  include Supa::Representable

  define do
    namespace :jsonapi do
      attribute :version, getter: -> { '1.0' }
    end

    collection :included, getter: -> { station_codes } do
      attribute :id, getter: -> { self }
      attribute :type, getter: -> { 'stations' }

      namespace :attributes do
        attribute :code, getter: -> { self }
      end
    end
  end

  def station_codes
    codes = self.collect(&:departure_station_code) + self.collect(&:arrival_station_code)
    codes.uniq!
    codes
  end
end