create method
Creates an App Engine application for a Google Cloud Platform project.
Required fields: id - The ID of the target Cloud Platform project. location - The region (https://cloud.google.com/appengine/docs/locations) where you want the App Engine application located.For more information about App Engine applications, see Managing Projects, Applications, and Billing (https://cloud.google.com/appengine/docs/standard/python/console/).
request - The metadata request object.
Request parameters:
$fields - Selector specifying which fields to include in a partial
response.
Completes with a Operation.
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<Operation> create(
  Application request, {
  core.String? $fields,
}) async {
  final body_ = convert.json.encode(request);
  final queryParams_ = <core.String, core.List<core.String>>{
    if ($fields != null) 'fields': [$fields],
  };
  const url_ = 'v1/apps';
  final response_ = await _requester.request(
    url_,
    'POST',
    body: body_,
    queryParams: queryParams_,
  );
  return Operation.fromJson(response_ as core.Map<core.String, core.dynamic>);
}