list method
Lists the domain mappings on an application.
Request parameters:
appsId - Part of parent. Required. Name of the parent Application
resource. Example: apps/myapp.
pageSize - Maximum results to return per page.
pageToken - Continuation token for fetching the next page of results.
$fields - Selector specifying which fields to include in a partial
response.
Completes with a ListDomainMappingsResponse.
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<ListDomainMappingsResponse> list(
  core.String appsId, {
  core.int? pageSize,
  core.String? pageToken,
  core.String? $fields,
}) async {
  final queryParams_ = <core.String, core.List<core.String>>{
    if (pageSize != null) 'pageSize': ['${pageSize}'],
    if (pageToken != null) 'pageToken': [pageToken],
    if ($fields != null) 'fields': [$fields],
  };
  final url_ =
      'v1/apps/' + commons.escapeVariable('$appsId') + '/domainMappings';
  final response_ = await _requester.request(
    url_,
    'GET',
    queryParams: queryParams_,
  );
  return ListDomainMappingsResponse.fromJson(
    response_ as core.Map<core.String, core.dynamic>,
  );
}