readCloser: readCloser,
		close:      make(chan struct{}),
	}

	// Assume args are validated by ReaderArgs.UnmarshalXML()
	newCsvReader := func(r io.Reader) *csv.Reader {
		ret := csv.NewReader(r)
		ret.Comma = []rune(args.FieldDelimiter)[0]
		ret.Comment = []rune(args.CommentCharacter)[0]
		ret.Quote = []rune{}
		if len([]rune(args.QuoteCharacter)) > 0 {
			// Add the first rune of args.QuoteCharacter

### Custom Algorithms (SFTP)

Custom algorithms can be specified via command line parameters.
Algorithms are comma separated. 
Note that valid values does not in all cases represent default values.

`--sftp=pub-key-algos=...` specifies the supported client public key

			Optional:    true,
			Sensitive:   false,
		},
		config.HelpKV{
			Key:         Extensions,
			Description: `comma separated file extensions` + defaultHelpPostfix(Extensions),
			Optional:    true,
			Type:        "csv",
		},
		config.HelpKV{
			Key:         MimeTypes,
			Description: `comma separated wildcard mime-types` + defaultHelpPostfix(MimeTypes),
			Optional:    true,
			Type:        "csv",
		},

## Architecture

![bucket-lookup](https://github.com/minio/minio/blob/master/docs/federation/lookup/bucket-lookup.png?raw=true)

### Environment variables

#### MINIO_ETCD_ENDPOINTS

This is comma separated list of etcd servers that you want to use as the MinIO federation back-end. This should
be same across the federated deployment, i.e. all the MinIO instances within a federated deployment should use same
etcd back-end.

claim_name    (string)    JWT canned policy claim name, defaults to "policy"
claim_prefix  (string)    JWT claim namespace prefix e.g. "customer1/"
scopes        (csv)       Comma separated list of OpenID scopes for server, defaults to advertised scopes from discovery document e.g. "email,admin"
comment       (sentence)  optionally add a comment to this setting
```

and ENV based options

```

claim_name    (string)    JWT canned policy claim name, defaults to "policy"
claim_prefix  (string)    JWT claim namespace prefix e.g. "customer1/"
scopes        (csv)       Comma separated list of OpenID scopes for server, defaults to advertised scopes from discovery document e.g. "email,admin"
comment       (sentence)  optionally add a comment to this setting
```

and ENV based options

```

| policy     | _string_ or _[]string_ or _comma_separated_value_ | Canned policy name to be applied for STS credentials. (Mandatory) - This can be configured to any desired value such as `roles` or `groups` by setting the environment variable `MINIO_IDENTITY_OPENID_CLAIM_NAME` |

			}
			columnValue = string(b)
		default:
			return fmt.Errorf("Cannot marshal unhandled type: %T", kv.Value)
		}
		csvRecord = append(csvRecord, columnValue)
	}

	w := csv.NewWriter(writer)
	w.Comma = opts.FieldDelimiter
	w.Quote = opts.Quote
	w.AlwaysQuote = opts.AlwaysQuote
	w.QuoteEscape = opts.QuoteEscape
	if err := w.Write(csvRecord); err != nil {
		return err
	}
	w.Flush()
	return w.Error()

			keys:           []string{"connection_string", "comment"},
			expectedFields: map[string]struct{}{},
		},
		// Incorrect type of input v/s required keys.
		{
			input:          `comme="really long comment" connection_str="host=localhost port=2832"`,
			keys:           []string{"connection_string", "comment"},
			expectedFields: map[string]struct{}{},
		},
	}
	for _, test := range tests {
		test := test