o easily tweak text inputs,
e.g. prompt weighting. If not provided, text embeddings will be generated from prompt input
argument.   negative_generated_prompt_embeds (torch.FloatTensor, optional) —
Pre-generated negative text embeddings from the GPT2 language model. Can be used to easily tweak text
inputs, e.g. prompt weighting. If not provided, negative_prompt_embeds will be computed from
negative_prompt input argument.   attention_mask (torch.