class_docstr_tok: []
code: def message(self, x_j, norm):
      return norm.view(-1, 1) * x_j
  
imports: import torch
  import torch.nn
  import torch.nn.functional
  from torch_geometric.nn.conv import MessagePassing
  from torch_geometric.utils import degree, remove_self_loops, add_self_loops
label_desc: Use image node_id 7 for calling the FeatureExpander obj's underlying member method code with example usage: obj.message(x_j, norm) and returns: unknown