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: diff_stats_collection.rb
    path of file: ./repos/gitlabhq/lib/gitlab/git
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module Gitlab
  module Git
    cl
    
      def real_size
        max_files = ::Commit.diff_max_files
        if paths.size > max_files
          "#{max_files}+"
        else
          paths.size.to_s
        end