  your model's modeling code on another one. E.g. FSMT's modeling code is based on BART, while FSMT's tokenizer code
  is based on XLM.
It's more of an engineering challenge than a scientific challenge. You should spend more time on creating an
  efficient debugging environment than trying to understand all theoretical aspects of the model in the paper.
Ask for help, when you're stuck! Models are the core component of 🤗 Transformers so that we at Hugging Face are more
  than happy to help you at every step to add your model. Don't hesitate to ask if you notice you are not making
  progress.
In the following, we try to give you a general recipe that we found most useful when porting a model to 🤗 Transformers.
The following list is a summary of everything that has to be done to add a model and can be used by you as a To-Do
