got, err := scanDataFolder(context.Background(), nil, base, dataUsageCache{Info: dataUsageCacheInfo{Name: "bucket"}}, getSize, 0, weSleep)
	if err != nil {
		t.Fatal(err)
	}
	if got.root() == nil {
		t.Log("cached folders:")
		for folder := range got.Cache {
			t.Log("folder:", folder)
		}
		t.Fatal("got nil root.")
	}

	// Test dirs
	want := []struct {
		path       string
		isNil      bool
		size, objs int

n","value":""},{"key":"enable_http2","value":"off"}]},"region":{"_":[{"key":"name","value":""}]},"scanner":{"_":[{"key":"speed","value":"default"},{"key":"idle_speed","value":""},{"key":"alert_excess_versions","value":"100"},{"key":"alert_excess_folders","value":"50000"},{"key":"delay","value":""},{"key":"max_wait","value":""},{"key":"cycle","value":""}]},"site":{"_":[{"key":"name","value":""},{"key":"region","value":""}]},"storage_class":{"_":[{"key":"standard","value":"EC:5"},{"key":"rrs","val...

}

// FilterPolicies - accepts a comma separated list of policy names as a string
// and bucket and returns only policies that currently exist in MinIO. If
// bucketName is non-empty, additionally filters policies matching the bucket.
// The first returned value is the list of currently existing policies, and the
// second is their combined policy definition.

func testListObjectsVersionedFolders(obj ObjectLayer, instanceType string, t1 TestErrHandler) {
	t, _ := t1.(*testing.T)
	testBuckets := []string{
		// This bucket is used for testing ListObject operations.
		"test-bucket-folders",
		// This bucket has file delete marker.
		"test-bucket-files",
	}
	for _, bucket := range testBuckets {
		err := obj.MakeBucket(context.Background(), bucket, MakeBucketOptions{
			VersioningEnabled: true,
		})

		}
		return s, err
	}
	s.formatData = formatData
	s.formatFileInfo = formatFi
	s.formatFile = pathJoin(s.drivePath, minioMetaBucket, formatConfigFile)

	// Create all necessary bucket folders if possible.
	if err = makeFormatErasureMetaVolumes(s); err != nil {
		return s, err
	}

	if len(s.formatData) > 0 {
		format := &formatErasureV3{}
		json := jsoniter.ConfigCompatibleWithStandardLibrary

		if _, err := GlobalKMS.GenerateKey(GlobalContext, e.Key, ctx); err != nil {
			return err
		}
	}
	return nil
}

// BatchKeyRotateFilter holds all the filters currently supported for batch replication
type BatchKeyRotateFilter struct {
	NewerThan     time.Duration `yaml:"newerThan,omitempty" json:"newerThan"`
	OlderThan     time.Duration `yaml:"olderThan,omitempty" json:"olderThan"`

	if p.RetainVersions < 0 {
		return BatchJobYamlErr{
			line: p.line,
			col:  p.col,
			msg:  "retainVersions must be >= 0",
		}
	}
	return nil
}

// BatchJobExpireFilter holds all the filters currently supported for batch replication
type BatchJobExpireFilter struct {
	line, col     int
	OlderThan     time.Duration       `yaml:"olderThan,omitempty" json:"olderThan"`

		return false
	}

	if len(cfg.MimeTypes) > 0 && hasPattern(cfg.MimeTypes, contentType) {
		// Matched an MIME type to compress, do not exclude.
		return false
	}

	// Did not match any inclusion filters, exclude from compression.
	return true
}

// Utility which returns if a string is present in the list.
// Comparison is case insensitive. Explicit short-circuit if
// the list contains the wildcard "*".

			bucket.Methods(http.MethodGet).HandlerFunc(api.ListenNotificationHandler).Queries("events", "{events:.*}")
		}
	}
}

// registerAPIFunctions helper function to add API functions identified by name to the routers.
func registerAPIFunctions(muxRouter *mux.Router, objLayer ObjectLayer, apiFunctions ...string) {
	if len(apiFunctions) == 0 {
		// Register all api endpoints by default.
		registerAPIRouter(muxRouter)
		return

			// always set this to distinguish between `mc mirror` replication and serverside
			ReplicationRequest: true,
		},
	})
	return err
}

// filterReplicationStatusMetadata filters replication status metadata for COPY
func filterReplicationStatusMetadata(metadata map[string]string) map[string]string {
	// Copy on write
	dst := metadata
	var copied bool
	delKey := func(key string) {