After finishing the training phase, I want to save the RoBERTa classifier model for later evaluation purpose.

I am getting this error.
AttributeError                            Traceback (most recent call last)
 in 
1 out_model = “src_classifier_final_ICWSM_10e”
----> 2 src_classifier.save_model(f’models/{out_model}_final’)
~/.local/lib/python3.8/site-packages/torch/nn/modules/module.py in getattr(self, name)
945             if name in modules:
946                 return modules[name]
 → 947         raise AttributeError("’{}’ object has no attribute ‘{}’".format(
948             type(self).name, name))
949
AttributeError: ‘RobertaForSequenceClassification’ object has no attribute ‘save_model’