code: def clean_stats(self, set_None=True):
      if set_None:
          self.memory_bank = None
      else:
          self.memory_bank = paddle.zeros_like(self.memory_bank)
  
imports: import numpy
  from tqdm import tqdm
  import paddle
  import paddle.nn
  import paddle.nn.functional
  from paddle.vision.models.resnet import resnet18, resnet50, wide_resnet50_2
  from scipy.ndimage import gaussian_filter
  from qinspector.cvlib.workspace import register
  from qinspector.uad.utils.utils import cdist, cholesky_inverse, mahalanobis, mahalanobis_einsum, orthogonal, svd_orthogonal
  from qinspector.uad.utils.k_center_greedy import KCenterGreedy
label_desc: Use image node_id 2 for calling the PatchCore obj's underlying member method code with example usage: obj.clean_stats(set_None) without return types