}

    private <T> T fetchSchemaModel(Class<T> modelType) {
        toolingApi.withConnection() { connection ->
            ModelBuilder<T> modelBuilder = connection.model(modelType)
            collectOutputs(modelBuilder)
            modelBuilder.get()
        }
    }

    private static boolean documentIsEquivalentTo(
        String expectedDocumentText,

        withConnection {
            def launcher = newBuild()
                .forTasks(task)
                .addProgressListener(events, operationTypes)
            collectOutputs(launcher)
            config.execute(launcher)
            launcher.run()
        }
    }

        TestLauncher testLauncher = connection.newTestLauncher()
            .withCancellationToken(cancellationToken)
            .addProgressListener(events, OperationType.TASK, OperationType.TEST)

        collectOutputs(testLauncher)

        configurationClosure.call(testLauncher)

        events.clear()
        if (resultHandler == null) {
            testLauncher.run()
        } else {