Private method in module in Ruby

In Ruby, private method can be defined in module:

module Hoge
  private

  def p_method
    puts 1
  end
end

class Foo
  include Hoge
end

Try it on IRB.

irb(main)> Foo.new.p_method
NoMethodError: private method `p_method' called for #<Foo:0x007fd660b9de88>
	from (irb):13
	from /Users/toshi/.rbenv/versions/2.2.4/bin/irb:11:in `<main>'

As expected, private method defined in Hoge module cannot be called from Foo instance.

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