exportAnalyticsMetrics method
      
Future<GoogleLongrunningOperation> 
exportAnalyticsMetrics(
    
- GoogleCloudRetailV2ExportAnalyticsMetricsRequest request,
 - String catalog, {
 - String? $fields,
 
Exports analytics metrics.
Operation.response is of type ExportAnalyticsMetricsResponse.
Operation.metadata is of type ExportMetadata.
request - The metadata request object.
Request parameters:
catalog - Required. Full resource name of the parent catalog. Expected
format: projects / * /locations / * /catalogs / * 
Value must have pattern
^projects/\[^/\]+/locations/\[^/\]+/catalogs/\[^/\]+$.
$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> exportAnalyticsMetrics(
  GoogleCloudRetailV2ExportAnalyticsMetricsRequest request,
  core.String catalog, {
  core.String? $fields,
}) async {
  final body_ = convert.json.encode(request);
  final queryParams_ = <core.String, core.List<core.String>>{
    if ($fields != null) 'fields': [$fields],
  };
  final url_ =
      'v2/' + core.Uri.encodeFull('$catalog') + ':exportAnalyticsMetrics';
  final response_ = await _requester.request(
    url_,
    'POST',
    body: body_,
    queryParams: queryParams_,
  );
  return GoogleLongrunningOperation.fromJson(
      response_ as core.Map<core.String, core.dynamic>);
}