private InputStream standardInput;
    private boolean forwardingSystemStreams;
    private Map<String, String> environment;

    public DefaultGradleRunner() {
        this(new ToolingApiGradleExecutor(), calculateTestKitDirProvider(SystemProperties.getInstance()));
    }

    DefaultGradleRunner(GradleExecutor gradleExecutor, TestKitDirProvider testKitDirProvider) {
        this.gradleExecutor = gradleExecutor;