type KeyManager interface {
	// CreateKey creates a new key at the KMS with the given key ID.
	CreateKey(ctx context.Context, keyID string) error

	// DeleteKey deletes a key at the KMS with the given key ID.
	// Please note that is a dangerous operation.
	// Once a key has been deleted all data that has been encrypted with it cannot be decrypted
	// anymore, and therefore, is lost.
	DeleteKey(ctx context.Context, keyID string) error

			Optional:    true,
			Type:        "duration",
		},
		config.HelpKV{
			Key:         apiODirect,
			Description: "set to enable or disable O_DIRECT for writes under special conditions. NOTE: do not disable O_DIRECT without prior testing" + defaultHelpPostfix(apiODirect),
			Optional:    true,
			Type:        "boolean",
		},
		config.HelpKV{
			Key:         apiRootAccess,

			return err
		}
	}
	return nil
}

type xlMetaV2VersionHeaderV2 struct {
	VersionID [16]byte
	ModTime   int64
	Signature [4]byte
	Type      uint8
	Flags     uint8
	EcM, EcN  uint8 // Note that these will be 0/0 for non-v2 objects and older xl.meta
}

// UnmarshalMsg implements msgp.Unmarshaler
func (z *xlMetaV2VersionHeaderV2) UnmarshalMsg(bts []byte, hdrVer uint) (o []byte, err error) {
	var zb0001 uint32

		return defPool, noReadQuorumPools, nil
	}
	return PoolObjInfo{}, noReadQuorumPools, toObjectErr(errFileNotFound, bucket, object)
}

// return all pools with read quorum error or no error for an object with given opts.Note that this array is
// returned in the order of recency of object ModTime.
func (z *erasureServerPools) poolsWithObject(pools []PoolObjInfo, opts ObjectOptions) (errs []poolErrs) {
	for _, pool := range pools {

}

// Enabled returns if configURL is enabled.
func Enabled(kvs config.KVS) bool {
	return kvs.Get(ConfigURL) != ""
}

// GetSettings - fetches OIDC settings for site-replication related validation.
// NOTE that region must be populated by caller as this package does not know.
func (r *Config) GetSettings() madmin.OpenIDSettings {
	res := madmin.OpenIDSettings{}
	if !r.Enabled {
		return res
	}
	h := sha256.New()

	ClientWriteTimeout time.Duration

	SendBufSize int              // SO_SNDBUF size for the socket connection, NOTE: this sets server and client connection
	RecvBufSize int              // SO_RECVBUF size for the socket connection, NOTE: this sets server and client connection
	Interface   string           // This is a VRF device passed via `--interface` flag

	{"GREATER_THAN_512_MB", humanize.MiByte * 512, math.MaxInt64},
}

// ObjectsHistogramIntervals is the list of all intervals
// of object sizes to be included in objects histogram.
// Note: this histogram expands 1024B-1MB to incl. 1024B-64KB, 64KB-256KB, 256KB-512KB and 512KB-1MiB
var ObjectsHistogramIntervals = [dataUsageBucketLen]objectHistogramInterval{
	{"LESS_THAN_1024_B", 0, humanize.KiByte - 1},

	cpSrcPath := r.Header.Get(xhttp.AmzCopySource)
	var vid string
	if u, err := url.Parse(cpSrcPath); err == nil {
		vid = strings.TrimSpace(u.Query().Get(xhttp.VersionID))
		// Note that url.Parse does the unescaping
		cpSrcPath = u.Path
	}

	srcBucket, srcObject := path2BucketObject(cpSrcPath)
	// If source object is empty or bucket is empty, reply back invalid copy source.

			// Prefer local disks
			prefer[index] = disk.Hostname() == ""
		}

		written, err := erasure.Decode(ctx, writer, readers, partOffset, partLength, partSize, prefer)
		// Note: we should not be defer'ing the following closeBitrotReaders() call as
		// we are inside a for loop i.e if we use defer, we would accumulate a lot of open files by the time
		// we return from this function.

	// returns.
	AssumedRoleUser AssumedRoleUser `xml:",omitempty"`

	// The temporary security credentials, which include an access key ID, a secret
	// access key, and a security (or session) token.
	//
	// Note: The size of the security token that STS APIs return is not fixed. We
	// strongly recommend that you make no assumptions about the maximum size. As
	// of this writing, the typical size is less than 4096 bytes, but that can vary.