class_docstr: Actor model base class.
  
  Args:
      model (nn.Module): Actor Model.
      lora_rank (int): LoRA rank.
      lora_train_bias (str): LoRA bias training mode.
code: def __init__(
      self,
      model: nn.Module,
      lora_rank: int = 0,
      lora_train_bias: str = "none",
  ) -> None:
      super().__init__(
          lora_rank=lora_rank, lora_train_bias=lora_train_bias
      )
      self.model = model
      self.convert_to_lora()
  
file_path: colossalai/applications/Chat/coati/models/base/actor.py
imports: from typing import Optional
  import torch
  import torch.nn
  from ..lora import LoRAModule
label_desc: Use image node_id 1 to create a new Actor object from inherited base classes: LoRAModule with example: obj = Actor(model, lora_rank, lora_train_bias)