module ActiveJob::Arguments

def serialize_argument(argument)
  case argument
  when nil, true, false, Integer, Float # Types that can hardly be subclassed
    argument
  when String
    if argument.class == String
      argument
    else
      begin
        Serializers.serialize(argument)
      rescue SerializationError
        argument
      end
    end
  when GlobalID::Identification
    convert_to_global_id_hash(argument)
  when Array
    argument.map { |arg| serialize_argument(arg) }
  when ActiveSupport::HashWithIndifferentAccess
    serialize_indifferent_hash(argument)
  when Hash
    symbol_keys = argument.each_key.grep(Symbol).map!(&:to_s)
    aj_hash_key = if Hash.ruby2_keywords_hash?(argument)
      RUBY2_KEYWORDS_KEY
    else
      SYMBOL_KEYS_KEY
    end
    result = serialize_hash(argument)
    result[aj_hash_key] = symbol_keys
    result
  else
    if argument.respond_to?(:permitted?) && argument.respond_to?(:to_h)
      serialize_indifferent_hash(argument.to_h)
    else
      Serializers.serialize(argument)
    end
  end
end