The top-level message sent by the client for the ListVoices
method.
Attribute
Name
Description
language_code
str
Optional. Recommended.
BCP-47 __
language tag. If not specified, the API will return all
supported voices. If specified, the ListVoices call will
only return voices that can be used to synthesize this
language_code. E.g. when specifying "en-NZ", you will get
supported "en-NZ" voices; when specifying "no", you will get
supported "no-\*" (Norwegian) and "nb-\*" (Norwegian Bokmal)
voices; specifying "zh" will also get supported "cmn-\*"
voices; specifying "zh-hk" will also get supported "yue-hk"
voices.