# File lib/hashie/hash_extensions.rb, line 3
    def self.included(base)
      # Don't tread on existing extensions of Hash by
      # adding methods that are likely to exist.
      %w(stringify_keys stringify_keys!).each do |hashie_method|
        base.send :alias_method, hashie_method, "hashie_#{hashie_method}" unless base.instance_methods.include?(hashie_method)
      end
    end