You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: have_private_method.rb
    path of file: ./repos/artichoke/artichoke-backend/vendor/ruby/spec/mspec/lib/mspec/matchers
    
    the code of the file until where you have to start completion: require 'mspec/matchers/method'

class HavePrivateMethodMatcher < MethodMatcher
  def matches?(mod)
    @mod = mod
    mod.private_methods(@include_super).include? @method
  end

  def failure_message
    ["Expected #{@mod} to have private method '#{@
    
  def failure_message
    ["Expected #{@mod} to have private method '#{@method.to_s}'",
     "but it does not"]
  end

  def negative_failure_message
    ["Expected #{@mod} NOT to have private method '#{@method.to_s}'",
     "but it does"]
  end
end

module MSpecMatchers
  private def have_private_method(method, include_super = true)
    HavePrivateMethodMatcher.new method, include_super
  end