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: assets.rb
    path of file: ./repos/zammad/app/models/taskbar
    
    the code of the file until where you have to start completion: # Copyright (C) 2012-2024 Zammad Foundation, https://zammad-foundation.org/

class Taskbar
  module Asset
    
    def assets(data)
      return data if assets_added_to?(data)

      app_model = Taskbar.to_app_model

      if !data[ app_model ]
        data[ app_model ] = {}
      end