resolve_cached_associations

# File activerecord/lib/active_record/message_pack.rb, line 111
      def resolve_cached_associations(record, entry)
        i = 3 # entry == [class_name, attributes_hash, is_new_record, *associations]
        while i < entry.length
          begin
            record.association(entry[i]).target = decode(entry[i + 1])
          rescue ActiveRecord::AssociationNotFoundError
            # The association no longer exists, so just skip it.
          end
          i += 2
        end
      end