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: date_time.rb
    path of file: ./repos/truffleruby/lib/json/lib/json/add
    
    the code of the file until where you have to start completion: #frozen_string_literal: false
unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED
  require 'json'
end
require 'date'

class DateTime

  # Deserializ
    
  def self.json_create(object)
    args = object.values_at('y', 'm', 'd', 'H', 'M', 'S')
    of_a, of_b = object['of'].split('/')
    if of_b and of_b != '0'
      args << Rational(of_a.to_i, of_b.to_i)
    else
      args << of_a
    end