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: info.rb
    path of file: ./repos/nii/nii-core/lib/nii
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module Nii
  module Info
    autoload :Generic,           'nii/info/generic'
    autoload :Grammar,           'nii/info/grammar'
    autoload :Html,              'nii/info/html'
    autoload :MeasurementSystem, 'nii/info/measurement_system'
    autoload :Numbers,           'nii/info/numbers'
    autoload :Time,              'nii/info/time'
    autoload :Text,              'nii/info/text'

    # @api internal
    module ES
      autoload :Text, 'nii/info/es/text'
    end

    # @api internal
    module HE
      autoload :Text, 'nii/info/he/text'
    
    def self.[](key, locale = nil)
      return unless key =~ /^[a-z][_a-z]+$/
      locale &&= Locale.parse(locale).language&.upcase
      key      = key.name if key.is_a? Symbol
      @cache ||= {}
      @cache.fetch([key, locale]) do
        const_name  = key.split('_').map(&:capitalize).join
        namespace   = const_get(locale)                if locale and const_defined? locale, false
        constant    = namespace.const_get(const_name)  if namespace&.const_defined? const_name, false
        constant  ||= const_get(const_name)            if const_defined? const_name
        constant    = nil unless constant.respond_to? :new and constant != Generic
        @cache[[key, locale]] = constant
      end
    end