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: test_alias.rb
    path of file: ./repos/jruby/test/mri/ruby
    
    the code of the file until where you have to start completion: # frozen_string_literal: false
require 'test/unit'

class TestAlias < Test::Unit::TestCase
  class Alias0
    def foo
  
    
  def test_cyclic_zsuper
    bug9475 = '[ruby-core:60431] [Bug #9475]'

    a = Module.new do
      def foo
        "A"
      end
    end

    b = Class.new do
      include a
      attr_reader :b

      def foo
        @b ||= 0
        raise SystemStackError if (@b += 1) > 1
        # "foo from B"
        super + "B"
      end
    end

    c = Class.new(b) do
      alias orig_foo foo

      def foo
        # "foo from C"
        orig_foo + "C"
      end
    end

    b.class_eval do
      alias orig_foo foo
      attr_reader :b2

      def foo
        @b2 ||= 0
        raise SystemStackError if (@b2 += 1) > 1
        # "foo from B (again)"
        orig_foo + "B2"
      end
    end

    assert_nothing_raised(SystemStackError, bug9475) do
      assert_equal("ABC", c.new.foo, bug9475)
    end
  end