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

module Nanoc
  module Core
    module
    
        def __nanoc_stringify_keys_recursively
          array = []
          each do |element|
            array << (element.respond_to?(:__nanoc_stringify_keys_recursively) ? element.__nanoc_stringify_keys_recursively : element)
          end
          array
        end