code: def update(self, aggr_out):
      if self.bias is not None:
          aggr_out = aggr_out + self.bias
      return aggr_out
  
imports: from functools import partial
  import torch
  import torch.nn.functional
  from torch.nn import Parameter
  from torch.nn import Sequential, Linear, BatchNorm1d
  from torch_scatter import scatter_add
  from torch_geometric.nn import GINConv, GCNConv, global_add_pool, global_mean_pool
  from torch_geometric.nn.conv import MessagePassing
  from torch_geometric.utils import remove_self_loops, add_self_loops
  from torch_geometric.nn.inits import glorot, zeros
label_desc: Use image node_id 6 for calling the ResGCNConv obj's underlying member method code with example usage: obj.update(aggr_out) and returns: aggr_out