currentIdentity method
获取当前设置的客户身份
@return 如果当前还未设置过有效的客户身份,返回 null
Implementation
Future<Map<String, dynamic>> currentIdentity() async {
DMHubLog.v('currentIdentity method ');
Map<String, dynamic> result =
await _channel.invokeMethod(DMHubSDKMethod.currentIdentity, {});
// DMHubError.hasErrorFromResult(result);
return result;
}