func (sys *BucketMetadataSys) Reset() {
	sys.Lock()
	for k := range sys.metadataMap {
		delete(sys.metadataMap, k)
	}
	sys.Unlock()
}

// NewBucketMetadataSys - creates new policy system.
func NewBucketMetadataSys() *BucketMetadataSys {
	return &BucketMetadataSys{
		metadataMap: make(map[string]BucketMetadata),
	}