getDefaultBranch method
Get which branch is currently default branch set by CatalogService.SetDefaultBranch method under a specified parent catalog.
Request parameters:
catalog - The parent catalog resource name, such as projects / * /locations/global/catalogs/default_catalog.
Value must have pattern
^projects/\[^/\]+/locations/\[^/\]+/catalogs/\[^/\]+$.
$fields - Selector specifying which fields to include in a partial
response.
Completes with a GoogleCloudRetailV2GetDefaultBranchResponse.
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<GoogleCloudRetailV2GetDefaultBranchResponse> getDefaultBranch(
  core.String catalog, {
  core.String? $fields,
}) async {
  final queryParams_ = <core.String, core.List<core.String>>{
    if ($fields != null) 'fields': [$fields],
  };
  final url_ = 'v2/' + core.Uri.encodeFull('$catalog') + ':getDefaultBranch';
  final response_ = await _requester.request(
    url_,
    'GET',
    queryParams: queryParams_,
  );
  return GoogleCloudRetailV2GetDefaultBranchResponse.fromJson(
      response_ as core.Map<core.String, core.dynamic>);
}