list method
Get all versions of a subject.
The response will be an array of versions of the subject.
Request parameters:
parent - Required. The subject whose versions are to be listed.
Structured like:
projects/{project}/locations/{location}/schemaRegistries/{schema_registry}/subjects/{subject}
or
projects/{project}/locations/{location}/schemaRegistries/{schema_registry}/contexts/{context}/subjects/{subject}
Value must have pattern
^projects/\[^/\]+/locations/\[^/\]+/schemaRegistries/\[^/\]+/contexts/\[^/\]+/subjects/\[^/\]+$.
deleted - Optional. If true, the response will include soft-deleted
versions of an active or soft-deleted subject. The default is false.
$fields - Selector specifying which fields to include in a partial
response.
Completes with a HttpBody.
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<HttpBody> list(
  core.String parent, {
  core.bool? deleted,
  core.String? $fields,
}) async {
  final queryParams_ = <core.String, core.List<core.String>>{
    if (deleted != null) 'deleted': ['${deleted}'],
    if ($fields != null) 'fields': [$fields],
  };
  final url_ = 'v1/' + core.Uri.encodeFull('$parent') + '/versions';
  final response_ = await _requester.request(
    url_,
    'GET',
    queryParams: queryParams_,
  );
  return HttpBody.fromJson(response_ as core.Map<core.String, core.dynamic>);
}