code: def to(self, device):
      new = ExLlamaBuffer(self.config)
      new.attn_mask = (
          None
          if self.attn_mask is None
          else _move_tensor(
              self.attn_mask, device, "attn_mask", self.config
          )
      )
      return new
  
imports: import sys
  import torch
  from torch import nn
  import torch.nn.functional
  from safetensors import safe_open
  import cuda_ext
  import json
  import math
  import gc
  from enum import Enum
label_desc: Use image node_id 2 for calling the ExLlamaBuffer obj's underlying member method code with example usage: obj.to(device) and returns: new