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: runner_spec.rb
    path of file: ./repos/leftovers/spec
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

::RSpec.describe ::Leftovers::Runner do
  describe '.leftovers', :with_temp_d
    
              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