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: runtime.rb
    path of file: ./repos/rbs/lib/rbs/prototype
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

require_relative 'runtime/helpers'
require_relative 'runtime/value_object_generator'
require_relative 'runtime/reflection'

module RBS
  module Prototype
    class Runtime
      class Todo
        def initialize(builder:)
          @builder = builder
        
    
      def generate_mixin(mod, decl, type_name, type_name_absolute)
        each_mixined_module(type_name, mod) do |module_name, module_full_name, mixin_class|
          next if todo_object&.skip_mixin?(type_name: type_name_absolute, module_name: module_full_name, mixin_class: mixin_class)

          args = type_args(module_full_name)
          decl.members << mixin_class.new(
            name: module_name,
            args: args,
            location: nil,
            comment: nil,
            annotations: []
          )
        end
      end