Adding support for multiple mask tokens. (#14716)
* Adding support for multiple mask tokens.
- Original implem: https://github.com/huggingface/transformers/pull/10222
Co-authored-by: njafer <naveen.jafer@oracle.com>
* In order to accomodate optionally multimodal models like Perceiver
we add information to the tasks to specify tasks where we know for sure
if we need the tokenizer/feature_extractor or not.
* Adding info in the documentation about multi masks.
+ marked as experimental.
* Add a copy() to prevent overriding the same tensor over and over.
* Fixup.
* Adding small test for multi mask with real values..
Co-authored-by: njafer <naveen.jafer@oracle.com>
