code: def forward(self, posterior):
      raise NotImplementedError
  
file_path: botorch/test/sampling/test_base.py
imports: import torch
  from botorch.exceptions.errors import InputDataError
  from botorch.sampling.base import MCSampler
  from botorch.utils.testing import BotorchTestCase, MockPosterior
label_desc: Use image node_id 1 for calling the OtherSampler obj's underlying member method code with example usage: obj.forward(posterior) without return types