gistfile1.rb

module M1
  def fumullins
    p "M1#fumullins"
  end
end

module M2
  def fumullins
    p "M2#fumullins"
    super
  end
end

module M3
  def fumullins
    p "M3#fumullins"
    super
  end
end

class Template
  include M1
  include M2
  include M3
end

t = Template.new
t.fumullins

"M3#fumullins"
"M2#fumullins"
"M1#fumullins"