Add docstring for processor method

transformers/data/processors/utils.py

@@ -86,6 +86,15 @@ class InputFeatures(object):
 class DataProcessor(object):
     """Base class for data converters for sequence classification data sets."""
 
+    def get_example_from_tensor_dict(self, tensor_dict):
+        """Gets an example from a dict with tensorflow tensors
+
+        Args:
+            tensor_dict: Keys and values should match the corresponding Glue
+                tensorflow_dataset examples.
+        """
+        raise NotImplementedError()
+
     def get_train_examples(self, data_dir):
         """Gets a collection of `InputExample`s for the train set."""
         raise NotImplementedError()