/**
     * A dummy provider that provides one of given values each time it is queried, in the order given.
     */
    ProviderInternal<T> supplierWithValues(T... values) {
        return ProviderTestUtil.withValues(values)
    }

    ProviderInternal<T> supplierWithChangingExecutionTimeValues(T... values) {
        return ProviderTestUtil.withChangingExecutionTimeValues(values)
    }

	clientConfig := testConfig.Clone()
	serverConfig := testConfig.Clone()
	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()
	key := struct{}{}
	ctx = context.WithValue(ctx, key, true)
	go func() {
		defer close(clientErr)
		defer c.Close()
		var innerCtx context.Context
		clientConfig.Certificates = nil

				// the context close, and use the response if available.
				return handleResponse(re)
			default:
			}
			pc.cancelRequest(context.Cause(req.ctx))
		}
	}
}

// tLogKey is a context WithValue key for test debugging contexts containing
// a t.Logf func. See export_test.go's Request.WithT method.
type tLogKey struct{}

func (tr *transportRequest) logf(format string, args ...any) {