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: 20230820052319_create_active_storage_tables.active_storage.rb
    path of file: ./repos/rails-tabler-starter/db/migrate
    
    the code of the file until where you have to start completion: # This migration comes from active_storage (originally 20170806125915)
class CreateActiveStorageTables < ActiveRecord::Migration[5.2]
  def change
    # Use Active Record's configured type for primary and foreign keys
    primary_key_type, foreign_key_type = primary_and_foreign_key_types

    create_table :acti
    
  def change
    # Use Active Record's configured type for primary and foreign keys
    primary_key_type, foreign_key_type = primary_and_foreign_key_types

    create_table :active_storage_blobs, id: primary_key_type do |t|
      t.string   :key,          null: false
      t.string   :filename,     null: false
      t.string   :content_type
      t.text     :metadata
      t.string   :service_name, null: false
      t.bigint   :byte_size,    null: false
      t.string   :checksum

      if connection.supports_datetime_with_precision?
        t.datetime :created_at, precision: 6, null: false
      else
        t.datetime :created_at, null: false
      end

      t.index [ :key ], unique: true
    end