How to export a trained model from tensorflow and how correctly to import in opencv dnn?

I trained the MobileNetSSD for object detection. I used object detection API from tensorflow models: https://github.com/tensorflow/models/tree/master/research/object_detection

How to use (how to export) my trained model in opencv dnn? I had tried use this guide:

https://github.com/tensorflow/models/blob/master/research/object_detection/g3doc/exporting_models.md

But this method proably is not do for opencv.