class Some
  def initialize(name)
    @name = name
  end
  def hello
    p "hello, #{@name}"
  end
end

def some_factory
  Some.new('bot')
end

module AnotherModule
  def goodbye
    p "goodbye, #{@name}"
  end
end

class Another < Some
  include AnotherModule
end

def another_factory(type)
  if type
    Another.new('master')
  else
    some = some_factory
    some.extend(AnotherModule)
  end
end

another_factory(false).hello
another_factory(true).hello