languageCode property
The language the user has requested to receive support in.
This should be a BCP 47 language code (e.g., "en", "zh-CN", "zh-TW",
"ja", "ko"). If no language or an unsupported language is specified,
this field defaults to English (en). Language selection during case
creation may affect your available support options. For a list of
supported languages and their support working hours, see:
https://cloud.google.com/support/docs/language-working-hours
Implementation
core.String? languageCode;