instance method check_adapter

# File activejob/lib/active_job/queue_adapters/sneakers_adapter.rb, line 21
      def check_adapter
        ActiveJob.deprecator.warn <<~MSG.squish
          The built-in `sneakers` adapter is deprecated and will be removed in Rails 9.0.
          Please migrate from `sneakers` gem to `kicks` gem version 3.1.1 or later to use `ActiveJob` adapter from `kicks`.
        MSG
      end