whoIsByController method Null safety

Future<WhoIs?> whoIsByController(
  1. String controller
)

Implementation

Future<WhoIs?> whoIsByController(String controller) async {
  try {
    final response = await httpClient.get<QueryWhoIsResponse>('/registry/who_is_controller/$controller', contentType: "application/json");
    if (!response.isOk || response.body == null) {
      return null;
    }
    return response.body?.whoIs;
  } catch (e) {
    Log.warn("Failed to call query using REST API on $baseUrl/$query");
  }
  return null;
}