text: Title: How to combine two models to a single pb file?
  Body: Dear,
  
  My goal is adding more dataset to the pre-trained model to increase the accuracy.
  
  1. I freezed the graph to get the 1st model named **pre-trained-model.pb**
  2. Then I trained another model based on my own images followed [this topic](https://github.com/davidsandberg/facenet/wiki/Classifier-training-of-inception-resnet-v1)  named **new-model.pb**
  
  How can I merge these 2 model into one **final-model.pb**? or can I feed the 1st model to the second model to produce the final single model (pb)?