 prompt_embeds. If not provided, attention mask will
be computed from prompt input argument.   negative_attention_mask (torch.LongTensor, optional) —
Pre-computed attention mask to be applied to the negative_prompt_embeds. If not provided, attention
mask will be computed from negative_prompt input argument.   max_new_tokens (int, optional, defaults to None) —
The number of new tokens to generate with the GPT2 language model.   Returns 
prompt_e