chunk_content: eft import PromptEmbedding, PromptTuningConfig
  
  >>> config = PromptTuningConfig(
  ...     peft_type="PROMPT_TUNING",
  ...     task_type="SEQ_2_SEQ_LM",
  ...     num_virtual_tokens=20,
  ...     token_dim=768,
  ...     num_transformer_submodules=1,
  ...     num_attention_heads=12,
  ...     num_layers=12,
  ...     prompt_tuning_init="TEXT",
  ...     prompt_tuning_init_text="Predict if sentiment of this review is positive, negative or neutral",
  ...     toke