# File lib/quiz1/t/solutions/Florian Gross/solitaire.rb, line 78
    def initialize(key_method = nil)
      case key_method
        when true then
          @deck = Card.deck.sort_by { rand }
        when String then
          @deck = Card.deck
          generate_letter(key_method)
        else
          @deck = Card.deck
      end
    end