Directly import tensorflow lite models into tensorflow/keras

I am aware of converting tensorflow models to tflite, but is there a reverse procedure. I have been trying to dig the google documentation and this is not very clear to me.

I am trying to get this done for the models in here --> https://github.com/tensorflow/tpu/tree/master/models/official/efficientnet/lite

Maybe I am missing something. I am quite new to tensorflow.