DocumentLanguage interface 
An object representing the detected language for a given text span.
Properties
| confidence | Confidence of correctly identifying the language.  | 
| locale | Detected language. Value may an ISO 639-1 language code (ex. "en", "fr") or BCP 47 language tag (ex. "zh-Hans").  | 
| spans | Location of the text elements in the concatenated content the language applies to.  | 
Property Details
confidence
Confidence of correctly identifying the language.
confidence: number
				Property Value
number
locale
Detected language. Value may an ISO 639-1 language code (ex. "en", "fr") or BCP 47 language tag (ex. "zh-Hans").
locale: string
				Property Value
string
spans
Location of the text elements in the concatenated content the language applies to.
spans: DocumentSpan[]