Comprehend Entities language

Language must be specified when using the pretrained model.

aws comprehend detect-entities --text "hello"

An error occurred (ValidationException) when calling the DetectEntities operation: Value 'null' at 'languageCode'failed to satisfy constraint: Member must satisfy enum value set: [ar, hi, ko, zh-TW, zh, ja, en, de, it, fr, pt, es]

If using your own custom model, the language will be detected from the custom model.