# File lib/bson/bson_ruby.rb, line 488
    def serialize_array_element(buf, key, val, check_keys)
      # Turn array into hash with integer indices as keys
      h = BSON::OrderedHash.new
      i = 0
      val.each { |v| h[i] = v; i += 1 }
      serialize_object_element(buf, key, h, check_keys, ARRAY)
    end