// Store the preserved compression metadata.
	for k, v := range compressMetadata {
		srcInfo.UserDefined[k] = v
	}

	// We need to preserve the encryption headers set in EncryptRequest,
	// so we do not want to override them, copy them instead.
	for k, v := range encMetadata {
		srcInfo.UserDefined[k] = v
	}

	// Ensure that metadata does not contain sensitive information