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: mongoid.rb
    path of file: ./repos/padrino-framework/padrino-gen/lib/padrino-gen/padrino-tasks
    
    the code of the file until where you have to start completion: if PadrinoTasks.load?(:mongoid, defined?(Mongoid))
  require 'mongoid'

  namespace :mi do

    if Mongoid::VERSION =~ /^[012]\./
      # Mongoid 2 API
      def mongoid_collections
        Mongo
    
    def convert_ids(obj)
      if obj.is_a?(String) && obj =~ /^[a-f0-9]{24}$/
        defined?(Moped) ? Moped::BSON::ObjectId.from_string(obj) : BSON::ObjectId(obj)
      elsif obj.is_a?(Array)
        obj.map do |v|
          convert_ids(v)
        end
      elsif obj.is_a?(Hash)
        obj.each do |k, v|
          obj[k] = convert_ids(v)
        end
      else
        obj
      end