The request message for synchronous translation.
Optional. The format of the source text, for example, "text/html", "text/plain". If left blank, the MIME type defaults to "text/html".
Required. The BCP-47 language code to use for translation of the input text, set to one of the language codes listed in Language Support.
Optional. The model type requested for this translation.
The format depends on model type: - AutoML Translation
models: projects/{project-id}/locations/{location-
id}/models/{model-id} - General (built-in) models:
projects/{project-id}/locations/{location-
id}/models/general/nmt, projects/{project-
id}/locations/{location-id}/models/general/base For global
(non-regionalized) requests, use location-id global.
For example, projects/{project-
id}/locations/global/models/general/nmt. If missing, the
system decides which google base model to use.