code: def forward(self, X):
      return X
  
imports: import warnings
  from typing import Optional
  from unittest import mock
  import torch
  from botorch import settings
  from botorch.acquisition.cached_cholesky import CachedCholeskyMCAcquisitionFunction, CachedCholeskyMCSamplerMixin
  from botorch.acquisition.monte_carlo import MCAcquisitionFunction
  from botorch.acquisition.objective import GenericMCObjective, MCAcquisitionObjective
  from botorch.exceptions.warnings import BotorchWarning
  from botorch.models import SingleTaskGP
  from botorch.models.deterministic import GenericDeterministicModel
  from botorch.models.higher_order_gp import HigherOrderGP
  from botorch.models.model import Model, ModelList
  from botorch.models.transforms.outcome import Log
  from botorch.sampling.normal import IIDNormalSampler, MCSampler
  from botorch.utils.low_rank import extract_batch_covar
  from botorch.utils.testing import BotorchTestCase, MockModel, MockPosterior
  from linear_operator.utils.errors import NanError, NotPSDError
label_desc: Use image node_id 2 for calling the DummyCachedCholeskyAcqf obj's underlying member method code with example usage: obj.forward(X) and returns: X