disconnect!

# File activerecord/lib/active_record/connection_adapters/pool_config.rb, line 47
      def disconnect!(automatic_reconnect: false)
        ActiveSupport::ForkTracker.check!

        return unless @pool

        synchronize do
          return unless @pool

          @pool.automatic_reconnect = automatic_reconnect
          @pool.disconnect!
        end

        nil
      end