class LegacyDiffDiscussion < DiffDiscussion
  def self.unique_position_identifier(note)
    note.line_code
  end

  def self.build_original_discussion_id(note)
    Discussion.build_original_discussion_id(note)
  end

  def legacy_diff_discussion?
    true
  end

  # Keep this method in sync with the `potentially_resolvable` scope on `ResolvableNote`
  def potentially_resolvable?
    false
  end

  def collapsed?
    !active?
  end
end