Optionalstoretrue, Google stores the voice and returns Voice.id (for example,
voice_abc123def456), which can be managed via GetVoice, ListVoices,
and DeleteVoice and referenced by ID in synthesis requests. Stored
voices expire after 1 year of inactivity; using a stored voice in speech
synthesis or as a base_voice in CreateVoice extends its
expire_time. Projects are subject to a maximum active stored voice
quota; exceeding the quota returns RESOURCE_EXHAUSTED.false (default), the voice is not stored by Google and Voice.key
(for example, voicekey_...) is returned for client-side storage and
synthesis. Optional discovery metadata fields on voice are not
persisted or returned when store is false.true when voice.type is "prompted"
(otherwise fails with INVALID_ARGUMENT).A voice resource representing either a custom voice (created via
Optional. Whether the created voice is persisted and managed by Google.