}
}

// Getenv gets the value for the configuration key.
// It consults the operating system environment
// and then the go/env file.
// If Getenv is called for a key that cannot be set
// in the go/env file (for example GODEBUG), it panics.
// This ensures that CanGetenv is accurate, so that
// 'go env -w' stays in sync with what Getenv can retrieve.
func Getenv(key string) string {
	if !CanGetenv(key) {

			}
		} else {
			os.Unsetenv(test.key)
		}

		t.Run(test.name, func(t *testing.T) {
			t.Setenv(test.key, test.newValue)
			if os.Getenv(test.key) != test.newValue {
				t.Fatalf("unexpected value after t.Setenv: got %s, want %s", os.Getenv(test.key), test.newValue)
			}
		})

		got, exists := os.LookupEnv(test.key)
		if got != test.initialValue {

	// because setup will take care of those when bootstrapBuildTools returns.

	defer os.Setenv("GOROOT", os.Getenv("GOROOT"))
	os.Setenv("GOROOT", goroot_bootstrap)

	defer os.Setenv("GOPATH", os.Getenv("GOPATH"))
	os.Setenv("GOPATH", workspace)

	defer os.Setenv("GOBIN", os.Getenv("GOBIN"))
	os.Setenv("GOBIN", "")

	os.Setenv("GOOS", "")
	os.Setenv("GOHOSTOS", "")
	os.Setenv("GOARCH", "")

		homeEnvName() + "=/no-home",
		"CCACHE_DISABLE=1", // ccache breaks with non-existent HOME
		"GOARCH=" + runtime.GOARCH,
		"TESTGO_GOHOSTARCH=" + goHostArch,
		"GOCACHE=" + testGOCACHE,
		"GOCOVERDIR=" + os.Getenv("GOCOVERDIR"),
		"GODEBUG=" + os.Getenv("GODEBUG"),
		"GOEXE=" + cfg.ExeSuffix,
		"GOEXPERIMENT=" + os.Getenv("GOEXPERIMENT"),
		"GOOS=" + runtime.GOOS,

        DefaultAwsCredentials credentials = new DefaultAwsCredentials()
        String bucketName = System.getenv('G_S3_BUCKET')
        credentials.setAccessKey(System.getenv('G_AWS_ACCESS_KEY_ID'))
        credentials.setSecretKey(System.getenv('G_AWS_SECRET_ACCESS_KEY'))
        credentials.setSessionToken(System.getenv('G_AWS_SESSION_TOKEN'))

        S3Client s3Client = new S3Client(credentials, new S3ConnectionProperties())

func Builder() string {
	return os.Getenv("GO_BUILDER_NAME")
}

// HasGoBuild reports whether the current system can build programs with “go build”
// and then run them with os.StartProcess or exec.Command.
func HasGoBuild() bool {
	if os.Getenv("GO_GCFLAGS") != "" {
		// It's too much work to require every caller of the go command
		// to pass along "-gcflags="+os.Getenv("GO_GCFLAGS").

		{Name: "GOSUMDB", Value: cfg.GOSUMDB, Changed: cfg.GOSUMDBChanged},
		{Name: "GOTMPDIR", Value: cfg.Getenv("GOTMPDIR")},
		{Name: "GOTOOLCHAIN"},
		{Name: "GOTOOLDIR", Value: build.ToolDir},
		{Name: "GOVCS", Value: cfg.GOVCS},
		{Name: "GOVERSION", Value: runtime.Version()},
		{Name: "GODEBUG", Value: os.Getenv("GODEBUG")},
		{Name: "GOTELEMETRY", Value: telemetry.Mode()},
		{Name: "GOTELEMETRYDIR", Value: telemetry.Dir()},

        source.getAST().getStatementBlock().visit(transformer);
        for (Object method : source.getAST().getMethods()) {
            MethodNode methodNode = (MethodNode) method;
            methodNode.getCode().visit(transformer);
        }
    }

    public static ClassNode getScriptClass(SourceUnit source) {

	b.WriteString(fmt.Sprintf("ISTIO_OUTBOUND_PORTS=%s\n", os.Getenv("ISTIO_OUTBOUND_PORTS")))
	b.WriteString(fmt.Sprintf("ISTIO_LOCAL_EXCLUDE_PORTS=%s\n", os.Getenv("ISTIO_LOCAL_EXCLUDE_PORTS")))
	b.WriteString(fmt.Sprintf("ISTIO_EXCLUDE_INTERFACES=%s\n", os.Getenv("ISTIO_EXCLUDE_INTERFACES")))
	b.WriteString(fmt.Sprintf("ISTIO_SERVICE_CIDR=%s\n", os.Getenv("ISTIO_SERVICE_CIDR")))

	switch runtime.GOOS {
	case "windows":
		dir = Getenv("LocalAppData")
		if dir == "" {
			return "", errors.New("%LocalAppData% is not defined")
		}

	case "darwin", "ios":
		dir = Getenv("HOME")
		if dir == "" {
			return "", errors.New("$HOME is not defined")
		}
		dir += "/Library/Caches"

	case "plan9":
		dir = Getenv("home")
		if dir == "" {