class_docstr: :param kernel_size: (int) Must be an ODD number!!
class_docstr_tok: [":","param","kernel_size",":","(","int",")","Must","be","an","ODD","number","!","!"]
code: def freeze_bn(self):
      for m in self.modules():
          if isinstance(m, nn.BatchNorm2d):
              m.eval()
  
file_path: pywick/pywick/models/segmentation/testnets/lg_kernel_exfuse/large_kernel_exfuse.py
imports: import torch
  from torch import nn
  from .deeplab_resnet import ModelBuilder
  from .large_kernel import _GlobalConvModule
label_desc: Use image node_id 3 for calling the GCNFuse obj's underlying member method code with example usage: obj.freeze_bn() without return types