code: def test_fake_quants(self) -> None:
      t = torch.rand(1, 2, 3, 4)
      for observer in self.fake_quants:
          obs = self._get_observer_ins(observer)
          obs.forward(t)
  
file_path: pytorch/test/quantization/core/test_top_level_apis.py
imports: import torch
  import torch.ao.quantization
  from torch.testing._internal.common_utils import TestCase
label_desc: Use image node_id 3 for calling the TestDefaultObservers obj's underlying member method code with example usage: obj.test_fake_quants() without return types