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

module Boxing
  # The config of boxing
  #
  # @since 0.5.0
  class Config
    # @!attribute root
    #   @return [String] the appli
    
    def initialize(&block)
      @name = 'myapp'
      @root = '/src/app'
      @port = 9292
      @health_check_path = '/status'
      @assets_precompile = false
      @exclude_groups = default_exclude_groups

      instance_exec(self, &block) if defined?(yield)
    end