code: def test_from_vit(self):
      MAEEncoder.from_vit_encoder(self._vit().encoder)
  
imports: import unittest
  import torch
  import torchvision
  from lightly import _torchvision_vit_available
  from lightly.models import utils
label_desc: Use image node_id 2 for calling the TestMAEEncoder obj's underlying member method code with example usage: obj.test_from_vit() without return types