code: def free_gpu_memory(self):
      raise NotImplementedError(
          "TFLite does not support GPU inference on Nvidia devices"
      )
  
imports: import pickle
  from pathlib import Path
  from typing import Tuple, Union, Dict, Type
  from nebullvm.config import TENSORFLOW_BACKEND_FILENAMES
  from nebullvm.core.models import DeviceType, Device, ModelParams
  from nebullvm.operations.inference_learners.base import TensorflowBaseInferenceLearner, LearnerMetadata
  from nebullvm.optional_modules.tensorflow import tensorflow
label_desc: Use image node_id 3 for calling the TFLiteBackendInferenceLearner obj's underlying member method code with example usage: obj.free_gpu_memory() without return types