// form http://localhost:8181/v1/data/httpapi/authz
	type opaResultAllow struct {
		Result struct {
			Allow bool `json:"allow"`
		} `json:"result"`
	}

	// Handle simpler OPA responses when OPA URL is of
	// form http://localhost:8181/v1/data/httpapi/authz/allow
	type opaResult struct {
		Result bool `json:"result"`
	}

	respBody := bytes.NewReader(opaRespBytes)

## Example request and response

Sample request with `curl`:

```sh
curl -XPOST 'http://localhost:9001/?Action=AssumeRoleWithCustomToken&Version=2011-06-15&Token=aaa&RoleArn=arn:minio:iam:::role/idmp-vGxBdLkOc8mQPU1-UQbBh-yWWVQ'
```

Prettified Response:

}

// Simple tests of bucket lifecycle: PUT, GET, DELETE.
// Tests are related and the order is important.
func testBucketLifecycleHandlers(obj ObjectLayer, instanceType, bucketName string, apiRouter http.Handler,
	creds auth.Credentials, t *testing.T,
) {
	// test cases with sample input and expected output.
	testCases := []struct {
		method     string

			wantResult: `{"_1":3}`,
		},
		{
			name:       "date_diff_month_neg",
			query:      `SELECT date_diff(MONTH, '2020-01-20T', '2019-10-20T') FROM S3Object LIMIT 1`,
			wantResult: `{"_1":-3}`,
		},
		// Examples from https://docs.aws.amazon.com/AmazonS3/latest/userguide/s3-glacier-select-sql-reference-date.html#s3-glacier-select-sql-reference-date-diff
		{
			name:       "date_diff_year",

					}
				}
				return nil
			},
			OutCapacity: 1,
			InCapacity:  0,
		}))
		errFatal(manager.RegisterSingleHandler(handlerTest2, func(payload []byte) ([]byte, *RemoteErr) {
			// Simple roundtrip
			return append([]byte{}, payload...), nil
		}))
	}
	register(local)
	register(remote)

	remoteConn := local.Connection(remoteHost)
	const testPayload = "Hello Grid World!"

			return 'a'
		case unicode.IsDigit(r):
			return '0'
		case r == '_', r == '$':
			return r
		default:
			valid = false
			return -1
		}
	}, name)

	if valid {
		// check for simple name or quoted name
		// - letter/underscore followed by one or more letter/digit/underscore
		// - any text between quotes (text cannot contain a quote itself)

		return nil, err
	}
	if debugPrint {
		fmt.Println("Connecting Mux", m.MuxID, ",to", m.parent.Remote)
	}

	// Space for one message and an error.
	responseCh := make(chan Response, 1)

	// Spawn simple disconnect
	if requests == nil {
		go m.handleOneWayStream(responseCh, responses)
		return &Stream{responses: responseCh, Requests: nil, ctx: m.ctx, cancel: m.cancelFn, muxID: m.MuxID}, nil
	}

package ioutil

import (
	"io"
)

// Discard is just like io.Discard without the io.ReaderFrom compatible
// implementation which is buggy on NUMA systems, we have to use a simpler
// io.Writer implementation alone avoids also unnecessary buffer copies,
// and as such incurred latencies.
var Discard io.Writer = discard{}

// discard is /dev/null for Golang.
type discard struct{}

- ObjectType (default)
- LegacyObjectType (preserves existing deployments and older xl.json format)
- DeleteMarker (a versionId to capture the DELETE sequences implemented primarily for AWS spec compatibility)

A sample msgpack-JSON `xl.meta`, you can debug the content inside `xl.meta` using [xl-meta.go](https://github.com/minio/minio/tree/master/docs/debugging#decoding-metadata) program.

```json
{
  "Versions": [
    {
      "Type": 1,

mc batch status myminio/ E24HH4nNMcgY5taynaPfxu
●∙∙
Objects:        28766
Versions:       28766
Throughput:     3.0 MiB/s
Transferred:    406 MiB
Elapsed:        2m14.227222868s
CurrObjName:    share/doc/xml-core/examples/foo.xmlcatalogs
```

### 'describe' the batch job yaml.
```
mc batch describe myminio/ E24HH4nNMcgY5taynaPfxu
replicate:
  apiVersion: v1
...