code: def __repr__(self):
      return f"{self.__class__.__name__}({self.in_channels})"
  
imports: import copy
  import dgl
  import torch
  from dgl.nn.pytorch.conv import GraphConv, SAGEConv
  from torch import nn
  from torch.nn import BatchNorm1d, Parameter
  from torch.nn.init import ones_, zeros_
label_desc: Use image node_id 4 for calling the LayerNorm obj's underlying member method code with example usage: obj.__repr__() and returns: self, str, self, str