Users describe the type of Google Cloud Vision API tasks to perform
over images by using Feature\ s. Each Feature indicates a type of
image detection task to perform. Features encode the Cloud Vision
API vertical to operate on and the number of top-scoring results to
return.
str
Model to use for the feature. Supported values:
"builtin/stable" (the default if unset) and
"builtin/latest". DOCUMENT_TEXT_DETECTION and
TEXT_DETECTION also support "builtin/weekly" for the
bleeding edge release updated weekly.