Where is the pre-training data stored, want to know the format of input data.

In the relogic folder, about the tabart-pretraining.py, compare with rat-sql part, I didn't find the specific config file like xx.jsonet.
Are the paths of all input data and configuration files specified by the user? how could i know more information about the input data, I have a project that I want to use the GAP method to train on a Chinese dataset, so its important to me to know the format of original pre-training input data.
I would be grateful if anyone could tell me，Thanks