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class Chouette::Footnote < Chouette::ActiveRecord
  include ChecksumSupport
  belongs_to :line, inverse_of: :footnotes
  has_and_belongs_to_many :vehicle_journeys, :class_name => 'Chouette::VehicleJourney'
  validates_presence_of :line
  def checksum_attributes
    attrs = ['code', 'label']
    self.slice(*attrs).values
  end
end
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