list method
Lists all instances in a project for either a specified location or for all locations.
Request parameters:
parent - Required. The project and location for which to retrieve
instance information, in the format
projects/{project_id}/locations/{location}. In Cloud Filestore,
locations map to Google Cloud zones, for example us-west1-b. To
retrieve instance information for all locations, use "-" for the
{location} value.
Value must have pattern ^projects/\[^/\]+/locations/\[^/\]+$.
filter - List filter.
orderBy - Sort results. Supported values are "name", "name desc" or ""
(unsorted).
pageSize - The maximum number of items to return.
pageToken - The next_page_token value to use if there are additional
results to retrieve for this list request.
$fields - Selector specifying which fields to include in a partial
response.
Completes with a ListInstancesResponse.
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<ListInstancesResponse> list(
  core.String parent, {
  core.String? filter,
  core.String? orderBy,
  core.int? pageSize,
  core.String? pageToken,
  core.String? $fields,
}) async {
  final queryParams_ = <core.String, core.List<core.String>>{
    if (filter != null) 'filter': [filter],
    if (orderBy != null) 'orderBy': [orderBy],
    if (pageSize != null) 'pageSize': ['${pageSize}'],
    if (pageToken != null) 'pageToken': [pageToken],
    if ($fields != null) 'fields': [$fields],
  };
  final url_ = 'v1/' + core.Uri.encodeFull('$parent') + '/instances';
  final response_ = await _requester.request(
    url_,
    'GET',
    queryParams: queryParams_,
  );
  return ListInstancesResponse.fromJson(
      response_ as core.Map<core.String, core.dynamic>);
}