              A list of indices correlating to connected GPUs that Tensorflow should not use. Pass
              ``None`` to not exclude any GPUs
          """
          retval = nullcontext()
          if self._backend == "amd":
              return retval
          if self._backend == "cpu":
 
</s> remove             return
 </s> add             return retval </s> remove 
 </s> add     cpu_mode: bool, optional
        ``True`` run the model on CPU. Default: ``False`` </s> remove             return
 </s> add             return retval </s> remove     """ Keras R-Net model for MTCNN """
    def __init__(self, model_path, allow_growth, exclude_gpus):
 </s> add     """ Keras R-Net model Definition for MTCNN

    Parameters
    ----------
    model_path: str
        The path to the keras model file
    allow_growth: bool, optional
        Enable the Tensorflow GPU allow_growth configuration option. This option prevents
        Tensorflow from allocating all of the GPU VRAM, but can lead to higher fragmentation and
        slower performance. Default: ``False``
    exclude_gpus: list, optional
        A list of indices correlating to connected GPUs that Tensorflow should not use. Pass
        ``None`` to not exclude any GPUs. Default: ``None``
    cpu_mode: bool, optional
        ``True`` run the model on CPU. Default: ``False``
    input_size: int
        The input size of the model
    threshold: list, optional
        Threshold for R-Net

    """
    def __init__(self,
                 model_path: str,
                 allow_growth: bool,
                 exclude_gpus: List[int],
                 cpu_mode: bool,
                 input_size: int,
                 threshold: float) -> None:
        cpu_mode: bool
            ``True`` run the model on CPU. Default: ``False``
              A list of indices correlating to connected GPUs that Tensorflow should not use. Pass
              ``None`` to not exclude any GPUs
        cpu_mode: bool
            ``True`` run the model on CPU. Default: ``False``
          """
          retval = nullcontext()
          if self._backend == "amd":
              return retval
          if self._backend == "cpu":
keep add keep keep keep keep keep
 Add CPU option to BiSeNet and MTCNN
  - Add CPU option to KSession
  - MTCNN optimizations
  - Update docs for bisenet + mtcnn 
lib/model/session.py