no layernorm_embedding (MarianConfig.normalize_embedding=False)
the model starts generating with pad_token_id (which has 0 as a token_embedding) as the prefix (Bart uses
    <s/>),
Code to bulk convert models can be found in convert_marian_to_pytorch.py.
This model was contributed by sshleifer.
Naming
All model names use the following format: Helsinki-NLP/opus-mt-{src}-{tgt}
The language codes used to name models are inconsistent. Two digit codes can usually be found here, three digit codes require googling "language
  code {code}".
Codes formatted like es_AR are usually code_{region}. That one is Spanish from Argentina.
The models were converted in two stages. The first 1000 models use ISO-639-2 codes to identify languages, the second
  group use a combination of ISO-639-5 codes and ISO-639-2 codes.
