Properties of a SpeechWordInfo.
Properties:
| Name | Type | Attributes | Description | 
|---|---|---|---|
| word | string | null | <optional> | SpeechWordInfo word | 
| startOffset | google.protobuf.IDuration | null | <optional> | SpeechWordInfo startOffset | 
| endOffset | google.protobuf.IDuration | null | <optional> | SpeechWordInfo endOffset | 
| confidence | number | null | <optional> | SpeechWordInfo confidence |