code: def __call__(self, data: torch.Tensor):
      self.data.data.append(data)
  
file_path: labml/helpers/labml_helpers/metrics/collector.py
imports: import dataclasses
  from typing import List
  import torch
  from labml import tracker
  from .None import Metric
label_desc: Use image node_id 2 for calling the Collector obj's underlying member method code with example usage: obj.__call__(data) without return types