dukaev

irb(main):001:0> A = Module.new
=> A
irb(main):002:0> B = Module.new
=> B
irb(main):003:0> C = Class.new
=> C
irb(main):004:0> D = Class.new(C) { include A, B }
=> D
irb(main):005:0> D < C
=> true