rsion embeddings load_lora_weights() for loading LoRA weights save_lora_weights() for saving LoRA weights  generate_mask  < source > ( image: Union = None target_prompt: Union = None target_negative_prompt: Union = None target_prompt_embeds: Optional = None target_negative_prompt_embeds: Optional = None source_prompt: Union = None source_negative_prompt: Union = None source_prompt_embeds: Optional = None source_negative_prompt_embeds: Optional 