def list_models(custom_headers:nil)
      response = list_models_async(custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
def list_models(custom_headers:nil)
      response = list_models_async(custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
This operation returns the list of domain-specific models that are supported
 by the Computer Vision API. Currently, the API supports following
 domain-specific models: celebrity recognizer, landmark recognizer.
 A successful response will be returned in JSON. If the request failed, the
 response will contain an error code and a message to help understand what
 went wrong.

 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.

 @return [ListModelsResult] operation results.