return nil, errors.New("MasterKeyID contains unsupported characters")
			}
		}
	}

	if config.XMLNS == "" {
		config.XMLNS = xmlNS
	}
	return &config, nil
}

// ApplyOptions ask for specific features to be enabled,
// when bucketSSEConfig is empty.
type ApplyOptions struct {
	AutoEncrypt bool
}

// Apply applies the SSE bucket configuration on the given HTTP headers and