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: stub_class_method_defined_on_active_record_association_proxy_test.rb
    path of file: ./repos/mocha/test/acceptance
    
    the code of the file until where you have to start completion: require File.expand_path('../acceptance_test_helper', __FILE__)

class StubClassMethodDefinedOnActiveRecordAssociationProxyTest < Mocha::TestCase
  includ
    
  def test_should_be_able_to_stub_method_if_ruby19_private_methods_include_method_but_method_does_not_actually_exist_like_active_record_association_proxy
    ruby19_klass = Class.new do
      class << self
        def private_methods(_include_superclass = true)
          [:my_class_method]
        end
      end
    end