## Examples of enabling bucket versioning using MinIO Java SDK

### EnableVersioning() API

```
import io.minio.EnableVersioningArgs;
import io.minio.MinioClient;
import io.minio.errors.MinioException;
import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;

public class EnableVersioning {
  /** MinioClient.enableVersioning() example. */

) : RoutePlanner.Plan {
  override val isReady = true

  override fun connectTcp() = error("already connected")

  override fun connectTlsEtc() = error("already connected")

  override fun handleSuccess() = connection

  override fun cancel() = error("unexpected cancel")

  override fun retry() = error("unexpected retry")

<% 
Integer statusCode = (Integer)request.getAttribute("jakarta.servlet.error.status_code");
String servletName = (String)request.getAttribute("jakarta.servlet.error.servlet_name");
String requestUri = (String)request.getAttribute("jakarta.servlet.error.request_uri");
String type = request.getParameter("type");
StringBuilder redirectPage = new StringBuilder();
redirectPage.append(((jakarta.servlet.http.HttpServletRequest)request).getContextPath());

<% 
Integer statusCode = (Integer)request.getAttribute("jakarta.servlet.error.status_code");
String servletName = (String)request.getAttribute("jakarta.servlet.error.servlet_name");
String requestUri = (String)request.getAttribute("jakarta.servlet.error.request_uri");
String type = request.getParameter("type");
StringBuilder redirectPage = new StringBuilder();
redirectPage.append(((jakarta.servlet.http.HttpServletRequest)request).getContextPath());

                break;
            case UNSPECIFIED:
                result += "Unspecified error";
                break;
            default:
                result += "Unknown error code: " + errorCode;
            }
            break;
        default:
            result += "unknown error class: " + errorClass;
        }
        return result;
    }

pkg net/http/httptrace, type WroteRequestInfo struct, Err error
pkg net/url, type URL struct, ForceQuery bool
pkg os/exec, func CommandContext(context.Context, string, ...string) *Cmd
pkg os/user, func LookupGroup(string) (*Group, error)
pkg os/user, func LookupGroupId(string) (*Group, error)
pkg os/user, method (*User) GroupIds() ([]string, error)
pkg os/user, method (UnknownGroupError) Error() string

            }
        }

        return "0x" + Hexdump.toHexString(errcode, 8);
    }

    private int error;


    DcerpcException ( int error ) {
        super(getMessageByDcerpcError(error));
        this.error = error;
    }


    /**
     * @param msg
     */
    public DcerpcException ( String msg ) {
        super(msg);
    }


    /**

func (z *StatusType) DecodeMsg(dc *msgp.Reader) (err error) {
	{
		var zb0001 string
		zb0001, err = dc.ReadString()
		if err != nil {
			err = msgp.WrapError(err)
			return
		}
		(*z) = StatusType(zb0001)
	}
	return
}

// EncodeMsg implements msgp.Encodable
func (z StatusType) EncodeMsg(en *msgp.Writer) (err error) {
	err = en.WriteString(string(z))
	if err != nil {

// call to the function. ie, it invokes the function
// if it is not successful yet.
func (l *Init) Do(f func() error) error {
	if atomic.LoadUint32(&l.done) == 0 {
		return l.do(f)
	}
	return nil
}

func (l *Init) do(f func() error) error {
	l.m.Lock()
	defer l.m.Unlock()
	if atomic.LoadUint32(&l.done) == 0 {
		if err := f(); err != nil {
			return err
		}

│   └── test_main.py
```

Let's say that now the file `main.py` with your **FastAPI** app has some other **path operations**.

It has a `GET` operation that could return an error.

It has a `POST` operation that could return several errors.

Both *path operations* require an `X-Token` header.

//// tab | Python 3.10+

```Python
{!> ../../docs_src/app_testing/app_b_an_py310/main.py!}
```

////