list method
Returns a list of runtimes that are supported for the requested project.
Request parameters:
parent - Required. The project and location from which the runtimes
should be listed, specified in the format projects / * /locations / * 
Value must have pattern ^projects/\[^/\]+/locations/\[^/\]+$.
filter - The filter for Runtimes that match the filter expression,
following the syntax outlined in https://google.aip.dev/160.
$fields - Selector specifying which fields to include in a partial
response.
Completes with a ListRuntimesResponse.
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<ListRuntimesResponse> list(
  core.String parent, {
  core.String? filter,
  core.String? $fields,
}) async {
  final queryParams_ = <core.String, core.List<core.String>>{
    if (filter != null) 'filter': [filter],
    if ($fields != null) 'fields': [$fields],
  };
  final url_ = 'v2/' + core.Uri.encodeFull('$parent') + '/runtimes';
  final response_ = await _requester.request(
    url_,
    'GET',
    queryParams: queryParams_,
  );
  return ListRuntimesResponse.fromJson(
      response_ as core.Map<core.String, core.dynamic>);
}