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: address_book.rb
    path of file: ./repos/spree/core/app/models/spree/order
    
    the code of the file until where you have to start completion: # https://github.com/spree-contrib/spree_address_book/blob/master/app/models/spree/order
    
      def update_or_create_address(attributes = {})
        return if attributes.blank?

        attributes.transform_values! { |v| v == '' ? nil : v }
        attributes = attributes.to_h.symbolize_keys

        default_address_scope = user ? user.addresses : ::Spree::Address
        default_address = default_address_scope.find_by(id: attributes[:id])

        if default_address&.editable?
          default_address.update(attributes)

          return default_address
        end