contentLanguage property
Updates the objects Content-Language fixed metadata.
Metadata values must use ISO 639-1 language codes. The maximum length for metadata values is 100 characters. Unset values in the request are ignored. To clear the metadata, set an empty value. For details, see [Content-Language](https://cloud.google.com/storage/docs/metadata#content-language).
Optional.
Implementation
core.String? contentLanguage;