code: def __repr__(self):
      return "{}({}, {})".format(
          self.__class__.__name__, self.in_channels, self.out_channels
      )
  
imports: from functools import reduce
  import random
  import networkx
  import numpy
  import torch
  import torch.nn
  import torch.nn.functional
  import torch_geometric.nn
  import torch_geometric.utils
  import utils
label_desc: Use image node_id 5 for calling the SAGEConv obj's underlying member method code with example usage: obj.__repr__() and returns: str