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: 20130122201442_create_logs.rb
    path of file: ./repos/arvados/services/api/db/migrate
    
    the code of the file until where you have to start completion: # Copyright (C) The Arvados Authors. All rights reserved.
#
# SPDX-License-Identifier: AGPL-3.0

class CreateLogs < ActiveRecord::Migration[4.2]
  def up
    create_table :logs do |t|
      t.string :uuid
      t.string :created_by_client
      t.string :created_by_user
      t.string :modified_by_client
      t.string :modified_by_user
      t.string :object_kind
      
    
  def up
    create_table :logs do |t|
      t.string :uuid
      t.string :created_by_client
      t.string :created_by_user
      t.string :modified_by_client
      t.string :modified_by_user
      t.string :object_kind
      t.string :object_uuid
      t.datetime :event_at
      t.string :event_type
      t.text :summary
      t.text :info

      t.timestamps
    end
    add_index :logs, :uuid, :unique => true
    add_index :logs, :object_kind
    add_index :logs, :object_uuid
    add_index :logs, :event_type
    add_index :logs, :event_at
    add_index :logs, :summary
  end