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. For example, if you specify "en-NZ", all
"en-NZ" voices will be returned. If you specify
"no", both "no-\*" (Norwegian) and "nb-\*"
(Norwegian Bokmal) voices will be returned.