train method
- GoogleCloudDialogflowV2TrainAgentRequest request,
- String parent, {
- String? $fields,
Trains the specified agent.
This method is a [long-running
operation](https://cloud.google.com/dialogflow/es/docs/how/long-running-operations).
The returned Operation type has the following method-specific fields: -
metadata: An empty
Struct message
- response: An Empty message Note: You should always train an agent prior to sending it queries. See the training documentation.
request - The metadata request object.
Request parameters:
parent - Required. The project that the agent to train is associated
with. Format: projects/.
Value must have pattern ^projects/\[^/\]+$.
$fields - Selector specifying which fields to include in a partial
response.
Completes with a GoogleLongrunningOperation.
Completes with a commons.ApiRequestError if the API endpoint returned an error.
If the used http.Client completes with an error when making a REST call,
this method will complete with the same error.
Implementation
async.Future<GoogleLongrunningOperation> train(
  GoogleCloudDialogflowV2TrainAgentRequest request,
  core.String parent, {
  core.String? $fields,
}) async {
  final body_ = convert.json.encode(request);
  final queryParams_ = <core.String, core.List<core.String>>{
    if ($fields != null) 'fields': [$fields],
  };
  final url_ = 'v2/' + core.Uri.encodeFull('$parent') + '/agent:train';
  final response_ = await _requester.request(
    url_,
    'POST',
    body: body_,
    queryParams: queryParams_,
  );
  return GoogleLongrunningOperation.fromJson(
      response_ as core.Map<core.String, core.dynamic>);
}